Capacitor code table

Published: 5. November 2009. Updated: 30. August 2019.

European capacitor material codes

FKC = metal foil and polycarbonate
FKP = metal foil and polypropylene
MKC = metallized polycarbonate foil
MKI = metallized polyphenylene sulphide
MKP = metallized polypropylene
MKS = polystyrene (metallized or with foil)
MKT = metallized polyester foil

Decoding capacitor codes

Looking at our capacitor we will see its marked 474J, this should be read as follows, 47 times the value that can be found in Table 1 corresponding to the 3rd number, in this case 10000. 47 * 10000 = 470000 pF = 470 nF = 0.47 uF with the J meaning a 5% tolerance. A second letter will be a temperature coefficient if its present. Judging by a capacitors size and type, you will quickly learn to determine if the value on the capacitor is given in pF, nF or uF.

If a capacitor is f.ex. marked 2A474J, the capacitance is decoded as described above, the two first signs is the voltage rating and can be decoded from table 2 here below. 2A is 100VDC rating according to the EIA standard.

Some capacitors are only marked 0.1 or 0.01, mostly in these cases the values are given in uF.

Some small capacitance capacitors can be marked with a R between numbers, f.ex. 3R9 where R is a indicator of values below 10pF and have nothing to do with resistance. 3R9 would be 3.9pF.

Table 1

3rd number Multiply with Letter Tolerance
0 1 D 0.5pF
1 10 F 1%
2 100 G 2%
3 1,000 H 3%
4 10,000 J 5%
5 100,000 K 10%
6 1,000,000 M 20%
7 Not used M 20%
8 0.01 P +100%/-0%
9 0.1 Z +80%/-20%


Table 2A – Electronic Industries Alliance (EIA) – DC voltage code table

0E = 2.5 VDC 2A = 100 VDC 3A = 1 kVDC
0G = 4.0 VDC 2Q = 110 VDC 3L = 1.2 kVDC
0L = 5.5 VDC 2B = 125 VDC 3B = 1.25 kVDC
0J = 6.3 VDC 2C = 160 VDC 3N = 1.5 kVDC
1A = 10 VDC 2Z = 180 VDC 3C = 1.6 kVDC
1C = 16 VDC 2D = 200 VDC 3D = 2 kVDC
1D = 20 VDC 2P = 220 VDC 3E = 2.5 kVDC
1E = 25 VDC 2E = 250 VDC 3F = 3 kVDC
1V = 35 VDC 2F = 315 VDC 3G = 4 kVDC
1G = 40 VDC 2V = 350 VDC 3H = 5 kVDC
1H = 50 VDC 2G = 400 VDC 3I = 6 kVDC
1J = 63 VDC 2W = 450 VDC 3J = 6.3 kVDC
1M = 70 VDC 2J = 630 VDC 3U = 7.5 kVDC
1U = 75 VDC 2I = 650 VDC 3K = 8 kVDC
1K = 80 VDC 2K = 800 VDC 4A = 10 kVDC

Table 2B – Electronic Industries Alliance (EIA) – AC voltage code table

2Q = 125 VAC 2T = 250 VAC 2S = 275 VAC
2X = 280 VAC 2F = 300 VAC I0 = 305 VAC
L0 = 350 VAC 2Y = 400 VAC P0 = 440 VAC
Q0 = 450 VAC V0 = 630 VAC  

Here is a list of common capacitors and a scale between the different grades of the Farad SI unit.

Table 3

(mF,uF eller mfd)
Capacitor code
1 0.001 0.000001 010
1.5 0.0015 0.0000015 1R5
2.2 0.0022 0.0000022 2R2
3.3 0.0033 0.0000033 3R3
3.9 0.0039 0.0000039 3R9
4.7 0.0047 0.0000047 4R7
5.6 0.0056 0.0000056 5R6
6.8 0.0068 0.0000068 6R8
8.2 0.0082 0.0000082 8R2
10 0.01 0.00001 100
15 0.015 0.000015 150
22 0.022 0.000022 220
33 0.033 0.000033 330
47 0.047 0.000047 470
56 0.056 0.000056 560
68 0.068 0.000068 680
82 0.082 0.000082 820
pF nF uF Code
100 0.1 0.0001 101
120 0.12 0.00012 121
130 0.13 0.00013 131
150 0.15 0.00015 151
180 0.18 0.00018 181
220 0.22 0.00022 221
330 0.33 0.00033 331
470 0.47 0.00047 471
560 0.56 0.00056 561
680 0.68 0.00068 681
750 0.75 0.00075 751
820 0.82 0.00082 821
1000 1 or 1n 0.001 102
1500 1.5 or 1n5 0.0015 152
2000 2 or 2n 0.002 202
2200 2.2 or 2n2 0.0022 222
3300 3.3 or 3n3 0.0033 332
4700 4.7 or 4n4 0.0047 472
5000 5 or 5n 0.005 502
5600 5.6 or 5n6 0.0056 562
6800 6.8 or 6n8 0.0068 682
10000 10 or 10n 0.01 103
15000 15 or 15n 0.015 153
22000 22 or 22n 0.022 223
33000 33 or 33n 0.033 333
47000 47 or 47n 0.047 473
68000 68 or 68n 0.068 683
pF nF uF Code
100000 100 or 100n 0.1 104
150000 150 or 150n 0.15 154
200000 200 or 200n 0.20 204
220000 220 or 220n 0.22 224
330000 330 or 330n 0.33 334
470000 470 or 470n 0.47 474
680000 680 0.68 684
1000000 1000 1.0 105
1500000 1500 1.5 155
2000000 2000 2.0 205
2200000 2200 2.2 225
10000000 10000 10 106

430 Responses to Capacitor code table

  1. Akindeji Akinade says:

    please what is or are the values (uf) of microwave capacitor?
    Also what is the wattage of the microwave transformer? please email me here:
    thanks you

  2. Mads Barnkob says:

    Microwave oven capacitors are typically between 0,8 to 1,0 uF and a microwave oven transformer will be about 600 to 1300 Watt depending on the model.

  3. hi, I have a capacitor marked with: 2J472J
    now I understand that 472=4700, J = 5% tolerence. What is the 2J in the start??
    and what is the tolerence??

  4. Mads Barnkob says:

    Hey Usama

    2J could be related to the manufacturer of the capacitor, nothing that will influence of what properties it has. Tolerance means that the given capacitance can be +/- 5% of the given value.

    Kind regards

  5. osama says:

    thanks for the reply buddy,
    now i can’t find a replacement for that 2J472J capacitor, can i use a different one instead?? if yes, what is the safe range of value?? a seller told me that the 474J can be a replacement, I know he can’t be serious..
    thx again

  6. Mads Barnkob says:

    You need to replace it with a 472 which is 4,7nF and a 474 is a 470nF, which is 100 times too large value for what you need.

  7. osama says:

    last question regarding this type of capacitors, is it polarized? and have negative and positive?? or its ok to install in any direction?? thanks buddy

  8. Mads Barnkob says:

    Hey Osama

    I am 99% sure that the capacitor you have is not polarized, polarized capacitors normally have other markings for the values and polarities are indicated.

    Kind regards

  9. osama says:

    huge thanks buddy 😀

  10. Dave says:

    I had a 474J capacitor go bad (it looks like it blew up) in a Sony audio system and ordered new ones from eBay but I received 474K instead. So the tolerance is 10% instead of 5%. Will they still work? Should I let the guy know he sent me wrong ones?

  11. Mads Barnkob says:

    Hey Dave

    It really depends where in the circuit the capacitor is used, if it was in the signal path of the audio signal, sound could be different. If it is used in a RC circuit the time constant of this could change. If it was used as decoupling over a IC it properly does not matter.

    Bottomline, I think you can change it without any problems, atleast you can always switch it off and install the correct ones if you find it acting up weird, the difference between 5% to 10% is afterall for a 474 only 20 nF.

    Kind regards

  12. Dave says:

    Thanks for the reply. I have changed them (there were two of them) and it seems to work fine now, but then again I haven’t tested it very thoroughly to see if any of the things you mentioned could be happening. I think I’ll keep using it normally for now and if I don’t notice anything off when listening to it, then all the better.

    PS. The problem it was doing before I fixed it was that it turned on and worked just fine, but it shut off automatically after a couple of minutes. Also, some burning smell could be present sometimes. The unit is a sound system and a 5-disc DVD player that came with my TV. Also, I was mistaken before, it’s Samsung, not Sony. Maybe you can tell me more with this extra information?

  13. D says:

    “6 and 7 not used”? Have tantalum cap in my hand: “106”

  14. Mads Barnkob says:

    Hey D

    I have updated the charts with this new standard, was capacitors get smaller, the writing also have to change.

    Kind regards

  15. Kevin says:

    I’m trying to replace a capacitor. It’s shaped like a barrel, about a 1/2″ tall. On the top it has three lines:
    V FK

    Any idea what I should replace it with?

  16. Mads Barnkob says:

    Hey Kevin

    470 is the rating in uF
    V is the voltage rating, can only be decoded from the manufaturers datasheet.
    FK is the type of capacitor
    6J9K is the series lot number

    It sounds like a electrolytic capacitor with a capacitance of 470 uF and a 35 VDC rating. That is taken from this datasheet, so be aware that if you have a different manufacturer, it could be other ratings.

    Kind regards

  17. Rob says:

    I found on a wiring schematic that a guitar needs a .047uf cap. Another site has all these different types of caps ranging from .00001 to 200. Whats the difference between all those and what would be the best one to use on a guitar? The capacitor is used for a tone knob on the guitar.

  18. Mads Barnkob says:

    Hey Rob

    I do not know much about guitars, but if the capacitor is part of a tone control it is likely to be part of a filter and you can then adjust that filter with the knob. Changing the capacitance to something else than the original will change the bandwidth of the tone knob, so it will work in a different spectrum.

    Kind regards

  19. David Annieya says:

    i want to sent the pictures of my capacitors i want to buy and where i can get them. need about 1000 pieces { }

  20. David Annieya says:

    it is a capacitor in fm transmitter pallet, i want to get your email address to sent you the pictures,i want to know much about it.

  21. Mads Barnkob says:

    Hello David

    Use a free online image upload service and post the link here in the comments.

    Kind regards

  22. fre says:

    Someone said before about first numeric + second character in poly-film-cap is “could be related to the manufacturer of the capacitor…”
    Recently seen in two caps – 2A102J & 2J102J ‘and’
    same again seen in two caps – 2A103J & 2E103J
    I think that’s is not related to manufacture/s coding system.. ‘and’
    it’s may be related to the ‘voltage’ – which is confusing..
    if some one knows better – please update

  23. ss says:

    2j222j,here what is 2j and how to determine the voltage

  24. Mads Barnkob says:

    Hello SS

    I have added a voltage rating table to the page. It is table 2 and gives the voltages according to the EIA standard.

    Kind regards

  25. ss says:

    then what is the use of manufacturing data sheet?if 3j333j means how much voltage

  26. Mads Barnkob says:

    Hey ss

    Capacitance and voltage rating is really only a very few specifications for a capacitor, to insure reliable operation there is many other factors, some of which are f.ex. used in pulse operation can be seen here:

    Kind regards

  27. ss says:

    i dont understand what are you trying to say,

  28. sumit says:

    225j 400v

  29. sumit says:

    i used other capacitor 225j400v

  30. Andrew says:

    Hello Sir,
    I have a couple of capacitors I can’t decode.
    First one is a Green looks like ceramic capacitor with the following:
    0z //the “0” on this line is more like a tradmark with stuff in the center of the “0” i cant make out
    The second one is a blue covered, looks like ceramic again, with silver paint on the top. This one has the following on it:

    //the “+” sign although it is next to the “1” is below a vertical white stripe which leads me to believe that sides pin is the positive pin and this is a polarized cap.

    Thanks for any help.

  31. Mads Barnkob says:

    Hey Andrew

    Pictures would help me more, but from your descriptions this is my best guess.

    The first is a 68nF capacitor, voltage rating is uncertain.

    The second sounds like a tantalum capacitor, which are polarized, 1uF and 35VDC rating.

    Kind regards

  32. Andrew says:

    Where can i put up some images for you?
    Thanks Mads

  33. Mads Barnkob says:

    Hey Andrew

    You can use f.ex. or any other free upload service.

    Kind regards

  34. Andrew says:
    thanks for all the help
    I just started uploading at the time of this post so it may need 30 min or so.

  35. Mads Barnkob says:

    Hey Andrew

    You are welcome 🙂 You might have to set the pictures to be displayed public before I can see them.

    Kind regards

  36. Andrew says:

    Sorry about that. I tested it; they should be public now.

  37. Mads Barnkob says:

    Hey Andrew

    My answers remain the same, the second capacitor could be a polyester or polypropylene capacitor, if you need a similar, pick one with the same capacitance and a voltage rating higher than the supply voltage of the circuit.

    Kind regards

  38. Andrew says:

    Thanks for all the help.

  39. RichT says:

    Hi guys, I have a small (6mm diameter) blue disk capacitor blown on the o/p of an inverter circuit. The capacitor is blue and marked with a “5” above a “.” and then “3KV”. I’m guessing the 3KV is the voltage rating but any ideas on the value? Thanks Richard

  40. Mads Barnkob says:

    Hey Richard

    From the physical size, voltage rating and it being a ceramic disc capacitor, it could be given in pF as that is the case when just a 1 or 2 digit number is given, but 5 pF capacitor is very unlikely to have sitting across the output of an inverter. You are right about the 3kV being the voltage rating.

    Kind regards

  41. Yugal Kapoor says:

    Hey MADS,
    can i replace 474 j 100v capacitor with a 470 nk 100 v capacitor? i need it for my samsung 5.1 surround system. so, plz tell me if the latter one capacitor is a replacement of the 474 j 100 v…
    Reply asap…

  42. Mads Barnkob says:

    Hello Yugal Kapoor

    No, the first is a 0.47uF capacitor, if you look at the table above you will find that value at the 474 code. Code 470 is only 1/1000 of the capacitance.

    You have the voltage rating correct, but you need a capacitor of the same capacitance to be sure of getting the same performance out of your speaker system. It could properly be substituted by another value, but still similar, +/- some 0.1uF depending on where in the circuit it is placed.

    Kind regards

  43. Gaétan Haché says:

    I need a 470pF 500v capacitor (at least 500v).
    The surplus store sold me two capacitor — but I’m have doubt that I have the right ones.
    One shows

    68 J
    N 470

    and the other
    +/- 20%

    Both are disc caps about 5mm width,

    Do I have the right one ?

    Many thanks,
    Gaetan Hache

  44. Mads Barnkob says:

    Gaetan Hache

    470 is the code for 47pF, you need a code 471 for a 470pF capacitor. Disc capacitors are usually ceramic and for a 5 mm wide capacitor, 500V rating sounds reasonable, but do check manufacturers datasheet to be sure.

    Kind regards

  45. Hi Mads,
    I have a Saab motor fan capacitor with markings
    I understand only that it is a Metalized Polyester file capacitor, rated up to 100 volts. What are the other numbers telling me about it?
    Thank you,
    Longmont, CO

  46. Mads Barnkob says:

    Hey David

    My best guess would be a 150nF (.15 uF) and 20% tolerance.

    Kind regards

  47. chris weller says:

    can you tell me what is 0,033MK on a capacitor please is it the same as 0.33uf?

  48. Mads Barnkob says:

    Hey chris weller

    I would say it is a 0,033uF capacitor as it written on it, it is easier to tell from a picture of the capacitor in question. Even if you just find a similar picture on the internet.

    Kind regards

  49. Trevor allen says:

    Can anyone help me identify a tiny non polarised blue bead capacitor with axial leads labelled
    A 10 4Z.

  50. Mads Barnkob says:

    Hey Trevor

    My best guess without a picture would be a 100nF capacitor

    Kind regards

  51. Amadeus Mee says:

    hey guys i hav this brown n green capacitors r they same ?
    they r written like 2A or 1K2 or 2Q or 3B what that means then 2n3 what that means

  52. Mads Barnkob says:

    Hey Amadeus Mee

    Refering to table 2 in this article: 2A = 100VDC and 2Q = 110VDC voltage rating. 3B is properly above 1kV. I guess that 2n3 is 2.3nF

    Kind regards

  53. Amadeus Mee says:

    very very thank you mads but looks what i did is in CFL i changeg 1250 volt 472J with 2A472j (that should be 100V 472J ) but it still working why?will it blow soon by over he or will shorten life of the tuben alos i tried 2G273J (400v273J) but didnt worked yes 273 is 10 times higher but shouldnt it worked better with high capacity
    kindly waiting for ur experties oppinion

  54. Amadeus Mee says:

    in polyester capacitor 1K2 mean 80*1.2 volt or 1.2kilovolt which is currect

  55. Amadeus Mee says:

    in polyester capacitor 1K2 means 1.2*80 volt or 1.2 kilovolt?

  56. Mads Barnkob says:

    Hey Amadeus

    The voltage rating could be so high, just to withstand the voltage spikes from the current switched by the transistor. It is not certain that manufacturers follow the marking standard, so you have to look at the datasheet from the manufacturer to be sure.

    If the capacitor is used as part of a frequency forming network, it has to be the exact same capacitance, else the circuit might not work as you found out with a larger capacitor.

    1K2 is voltage code for 1200VDC.

    Kind regards

  57. Amadeus Mee says:

    but above u mentioned 1K is 80 vDC how some one can say its 1200vdc or (80*1.2 )=96 VDC?
    as one of my friend arguing as 2A332J as 2ampire 332j where i told him according to ur table 2A=100VDC

  58. Mads Barnkob says:

    1K = 80VDC is only according to the Electronic Industries Alliance (EIA) – voltage code table standard. 1K2 is some bastard marking where the manufacturer uses the resistance markings for 1200 to write the voltage rating.

    I have not yet seen a small capacitor with current markings, you can almost sure that a capacitor is marked with voltage rating, tolerance and capacitance.

    As these examples show, there is not just one way to read the markings, there is many different ways and the only way to be sure is to find the manufacturers data sheet.

    Kind regards

  59. Amadeus Mee says:

    i think got every ans i need n yes yesterday whole night i hav been repairing my old compact fluorescent ballast (so called made in china – in my room only within 2 year i had to change 6 ,)so i decided to repair it any how n i repaired 3 of them
    very very thank you mads .. think got every ans i needed so far as it just my hobby i learnt every thing about electronics by my self since i was -7 yrs old n even i am a medical doctor now i couldnt quit my hobby … thank again u made my day

  60. Mads Barnkob says:

    I am happy that I could help you Amadeus 🙂

  61. mamata says:

    what does 3n3J 1n5J 1n8J means also there Is something like 1n5/2J what does it means?

  62. mamata says:

    can you tell me the output voltage n /current on 40w cfb/cfl tubes just some rough idea n how bad it will shock if accidently touched

  63. mamata says:

    what metal is used in metallized polypropylene n what is that stuff comes out from it whicj looks like rubber or lead like stuff i hav sent u 3 questions hope u will send me some clear guidance thank you

  64. Trevor Allen says:

    Hi Mads Barnkob,

    I am not very good on using the internet.

    I emailed you pictures of my Tiny Blue Capacitor labelled A 10 4Z, that you thought may be 100nF but needed a picture, AUG 16th. Did you recieve my photographs and my second e mail as I have not seen a reply since, sorry to trouble you, but I broke two of these and I need to replace them.
    Kind regards

  65. ramesh says:

    can we add 2 polyester cap in parallel to add-up its capacity ?

  66. Mads Barnkob says:

    Hey manata

    what does 3n3J 1n5J 1n8J means also there Is something like 1n5/2J what does it means? Look at the tables in this article and read the text, those corresponds to 3.3nF 5% tolerance and so on for the others.

    The output voltage from a 40W CFL driver is roughly around 900 to 1000 Volt at some high frequency, using Ohms laws that is around 40mA.

    Metallized polypropylene capacitors are likely to use aluminium or zinc for the metallization of the plastic film. The other stuff you find in a capacitor is then either plastic film, insulating substances or glue.

    Kind regards

  67. Mads Barnkob says:

    Hey Trevor

    I have not received any emails from you, write to me at “postmaster (at)” replace with a proper @ for a correct email address.

    Kind regards

  68. Mads Barnkob says:

    Hi ramesh

    Two capacitors in parallel will double the capacitance and keep the same voltage rating.

    Two capacitors in series will double the voltage rating but capacitance will be half.

    Try to play around with the capacitor calculator I made for exactly that:

    Kind regards

  69. mamata says:

    very very thank you so what if i use two diff capacitor like 2A182J+2A222J+2A332= 732J AM I RIGHT ?

  70. mamata says:

    but wha if i add 2 cap in parallel with diff volt like 2A232J+3B472=?

  71. Mads Barnkob says:

    Hi manata

    When you add different capacitors in parallel, you can just add the capacitances together as you did. But be aware that current sharing will not be equal.

    With different voltage ratings, you will have to derate the total capacitor bank to the lowest voltage.

    Kind regards

  72. mamata says:

    ok thank you once again ,
    i am so sorry if i am disturbing you agian but i hav one more question for u
    when i went to buy 1250volt 472J film capacitor they showed thre type one with green coat another brown one n next blue but the blue one is not rectangle as green n brown but blue one is round n loks completely diff are they all same can they replace each other i need that in compact fluo-ballast where they put to connect to terminal from the tube as starter can i put that blue one

  73. mamata says:

    actually i thought that blue one is tantalum cap .. is tantalum cap is in blue or it comes in diff color

  74. Mads Barnkob says:

    Hey mamata

    Tantalum capacitors can come in all colours, what you have to be aware about is that tantalum capacitors are polarized just like electrolytic capacitors and they will certainly not work in your CFL driver. They are generally low voltage rated and marked with + signs for positive lead.

    Here are some examples of tantalum capacitors:

    Kind regards

  75. mamata says:

    ok thank you very much for ur help n i hav last question for u in radial style film cap what does 01M means in capacitor El-Gi-AT KT11 -01M 1KV
    2nd question is u know there is a capacitor used in compact fluo ballast at the end out put connecting 2 terminals of the tube what is the function of that cap n what is it called eg.shunt? or snubber ? orHIGH DVDT/PULSE?

  76. Amadeus Mee says:

    what is the general frequency in cfl ?are they same in all powers like 20W 30W 40W?and as current varies ,do voltage varies too according to the power

  77. Amadeus Mee says:

    and do u hav any formula to calculate capacitor for given voltage current n frequency?

  78. Mads Barnkob says:

    Hey Amadeus

    I am guessing they are running at a fixed frequency with a simple oscillator and current output is determined by the pulse width of the driving signal. So only a few components needs to be changed between the different power versions.

    To find a formula for a given CFL circuit, you will have to reverse engineer it and do it yourself.

    Kind regards

  79. lo-fi says:


    I found your website while looking for an answer to a question that I’m not having much luck with.

    I’m almost finished replacing some of the caps (and most other components) on some audio compressors and have a requirement for 22pf in the VCA circuit, the only ones I could find were 22pf 500v 5% silver mica’s on ebay which I bought and have now turned up. Will I have any problems using these in the circuit even though the voltage rating is much higher than the circuit calls for? (the unit uses a 9v ac input.)

    I’m told that as long as the voltage is higher on a capacitor it should be OK, but this is probably much higher, not that I can tell what the original ones were rated at.

    Thanks for any advice.

  80. Mads Barnkob says:

    Hey lo-fi

    There is no problems in using capacitors with a higher voltage rating, some other characteristics but just the capacitance can however make a difference in the sound in such audio equipment as you repair. dv/dt rating, esr, esl etc, not that I think you will notice a difference.

    Only problem with higher voltage rating is that the capacitors are physically larger.

    Kind regards

  81. lo-fi says:

    Hi, thanks heaps for taking the time to respond. appreciate it.

  82. mamata says:

    i box film capacitor has value of 01M ,is that mean .o1uf?

  83. Mads Barnkob says:

    Hey mamata

    Is there a dot or a . in front of 01M, else it does seem that it could be a 0.01uF capacitor.

    Which physical size and voltage rating does it have?

    Kind regards

  84. mamata says:

    Hi, thanks for taking the time to respond once again,
    there is not any dot(.) so i am confused too,and the voltage rating is 1200v

  85. Mads Barnkob says:

    Hi mamata

    Unless it is a big capacitor, then the 1200v rating tells us that the capacitance can not be 1uF, so 0.01uF or 10nF as it is, sounds very reasonable for a some 20mm capacitor.

    Kind regards

  86. Nosa says:

    Can a capacitor of 68UF 400V be replaced with 33UF or 120UF with the same voltage rating?

  87. Mads Barnkob says:

    Hey Nosa

    You can replace with the 120uF, without much change in inrush current and with better smoothing capablitiy on your DC voltage. You risk that your voltage will sag with a capacitor that is almost half of the original, so avoid the 33uF.

    Kind regards

  88. Barry says:

    This is a great page…. I need to ID 2 caps one marked 180nj & the other 100nk, both 100vdc. They go in some sort of industrial video display control.

  89. Mads Barnkob says:

    Hey Barry

    180nj could be a 180 nF 5% tolerance and 100nk could be a 100 nF 10% tolerance.

    Kind regards

  90. Barry says:

    Thanks!!!! Greatly appreciate your help!

  91. Mr N D Saifi says:

    Any idea what I should replace it with?

  92. Mads Barnkob says:

    Hey Saifi

    Could you please upload a picture of it or find a similar online? Those numbers does not give me a certain clue.

    Kind regards

  93. retard says:


    please help

  94. Mads Barnkob says:

    Hi retard

    It is a 390uF 2,5V electrolytic smd capacitor.

    Kind regards

  95. retard says:


  96. sam says:

    Hi Mads,

    do you have an idea what this capacitor could be?

    It’s about 5 Millimeters tall and has its origin in a heating control from an u.s. manufacturer.

    Thank you!

  97. Mads Barnkob says:

    Hey Sam

    I think it is a varistor and not a capacitor, LF9 and PZ56 are both markings of this type varistor,

    I think it is the component on the first line on page 3.

    Kind regards

  98. sam says:

    Oh, great!

    Thanks a million!!

  99. Newbee says:

    Hey Mads Barnkob,

    Would you be kind to identify the component with black rectangle on it. It has 470nk400 written on it.

    Thanks in advance.

  100. Mads Barnkob says:

    Hi Newbee

    It is a MKT, metallized polyester foil type capacitor with a capacity of 470 nF, 10% tolerance and 400 VDC rating.

    Kind regards

  101. Dan says:

    I think MPP is Metallized Polypropylene too.

  102. Francisco Cardona says:

    which is the equivalent of the tantalum capacitor is to be 10 microfarad , what is your voltage ?

  103. Mads Barnkob says:

    Hello Francisco Cardona

    The 2nd line on the capacitor shows it is a 50VDC rating, the K with lines above and below is a ID tag related to the manufacturer.

    Kind regards

  104. mahlatse masanabo says:

    I am looking for a 33pf capacitor and I cnt seem to find it anywhere in my components and its polarized. Can you please kindly send me a picture of that. And I have like 104 capacitors which is like 100nF but here they used gold but I have blue. Is it find if I use the blue one?

  105. eileen brennan says:

    i have been to 2 electric component stores and no one seems to be able to identify these capacitors. the first ones markings are 473 J and an S with a circle around the S and then underneath that 630 and what I think is an asterisk and a P . the second capacitor is slightly smaller reads 223 J and as S with a circle, underneath it reads 630 asterisk P.they are both out of a sony trinitron tv brown in color a little less than an inch in length rectangular in shape. Any help would be so greatly appreciated, it’s my mother’s tv and she doesn’t want to part with it. Thank you

  106. Mads Barnkob says:

    Hi eileen brennan

    I think you are talking about this type of Metallized Polypropylene Film Capacitor. 473j 630 is a 47 nF 5% tolerance capacitor rated at 630V. 223J 630 is a 22 nF 5% tolerance capacitor rated at 630V.

    Kind regards

  107. eileen brennan says:

    Thank you so very much for your quick and informative reply. I have already ordered them online, thanks to you. It is sometimes easy to get discouraged when trying to learn something new but this website has explained a great deal to me in any easy to understand way and for that I thank you also! Things I would often throw out when they stopped working have been brought back to life with a little elbow grease and researching on the web. Just wanted to say thanks again.

  108. NOOB says:


    Could you help me identifying these 3 capacitators?

    I think the second one is 120uF 50V, but not sure.
    Can you tell what parametres these 3 components have?
    Or where can I find it out.

    Thanks in advance.

  109. Mads Barnkob says:

    Hey Noob

    The first is a 1.8 uF 410V electrolytic capacitor, black mark is the negative terminal.
    The second is a 120 uF 50V electrolytic capacitor, black mark is the negative terminal.
    The third is a 1 uF 400V electrolytic capacitor, black mark is the negative terminal.

    Kind regards

  110. mamata says:

    i hav few capacitors from CFL which is connected parallel to the polyster capacitor 2n2K,AND VALUE WRITTIN AS HL PR1 in one and SP MZ6 in another ,, the capacitors as i think ..both are round in shape and light green coloreed and surface is rough not smooth like that of other none electrolite caps can u give me some info

  111. mamata says:

    after while i got the pic from net as the Thermistor so plz tell me what is it what are the fxns and its role in CFL and the values like HL PR1 , SP MZ6( these are found in 20W CFL bout in one CFL its HL PR1 and another has SP MZ6 so i am confused abt its value
    waiting ur reply ..thank u for ur kind info

  112. Mads Barnkob says:

    Hey Mamata

    A PTC thermistor is used for current limiting or temperature limiting. As the SP MZ6 heats up, its resistance rises and thus no significant current can flow in the circuit.

    It is used as a protection against run-away CFL circuits.

    Kind regards

  113. mamata says:

    thank you but i couldnt find any site about guide of the lables on Thermistor can u give me some idea on that

  114. Jayde says:

    Hi Mads, i stumbled onto your site and i hope you can help me. I have two blown Metallized Polypropylene Film Capacitors (At least i think they are) with markings on that says 250v~×2 0.47uf +- 10℅ the code is mev473. The board comes out of an old aim microwave situated directly after the main power inlet. Can i replace these capacitors with anything else? I dont have access to parts now, but would like to know the posible alternatives when i do. Thank you in advance. Jay-De strydom.

  115. Mads Barnkob says:

    Hi Jayde

    You need some MKP Y1 or Y2 capacitors to replace those, as they are line to earth capacitors in your input filter.

    Read more here:

    Kind regards

  116. Jay-De says:

    Hi Mads

    Thanx a million for the info, i really appreciate it!

    Kind regards
    Jay-De Strydom

  117. Lexo Foyde says:

    Hi mate
    Could you please help me with a capacitor, its used in a cars airbag circuit. The capacitor reads “470nJ63” its a EVOX cmk, approximately 10mm squared 5mm width, yellow in colour. Done some research, could be polycarbonate, not sure. Any help would very appreciated, thank you

  118. Mads Barnkob says:

    Hey Lexo Foyde

    Just from the text on it it is quite clear that it is a 0.47 uF and 63 Volt capacitor, you can replace it with a PP/MKP/FKP (polypropylene) capacitor, you do not have to find a polycarbonate.

    Kind regards

  119. Lexo Foyde says:

    Thankyou very much, helped me heaps, cheers

  120. Bar says:

    Hi, sorry to be another person with zero knowledge, having a hard time finding a replacement polyester(?) capacitor from a TV.

    Has on it –

    105 k 500
    P472 MPP

    From what I’ve read it may be a .47uf with a metalliszed polypropylene film, guessing the last digits are a part# but what’s 105k and 500?
    Thank you for any information you may able to share.


  121. Mads Barnkob says:

    Hey Bar

    I would think that the first line give us the capacitance, tolerance and voltage rating. So I would guess this is a metallized polypropylene 1 uF capacitor with a tolerance of 10% (K) and 500 Volt rating.

    Kind regards

  122. Bar says:

    Thank you for your response, I’m way out of my element.

  123. daniel says:

    i have a surface mounted transistor coded cy334 used on a Samsung premium hi-fi audio system.i cant find one like it and i cant find the equivalent.can you help sir

  124. Mads Barnkob says:

    Hey Daniel

    CY334 is likely just the location number on the circuit board, you have to look at the text written on the component.

    Kind regards

  125. jamrock says:

    what value capacitor can i use instead of two 47pf 1kv capacitors in parallel.

  126. Mads Barnkob says:

    Hey Jamrock

    Paralleling capacitors double the capacitance, it corresponds to a 98pF 1kV capacitor, a 0,1nF would properly be fine too. They could however be in parallel for a higher current rating, you have to take that into account too.

    Kind regards

  127. Kostas says:

    Hi Mads,
    I want to replace the tantalum capacitor shown in the picture attached and I’m looking for an equivalent one. If I’m not mistaken, the capacity is 4,7μF and the voltage is 50 Vdc. What I haven’t figured out is the 3rd line of marking. What does the number 315 mean? Is it crucial for the capacitor’s performance? Thanks.

  128. Mads Barnkob says:

    Hey Kostas

    You are right about 475 being 4,7 uF rated at 50VDC.

    +315 tells us that the leg in this side is the positive terminal and 315 is the print week code, shorted PWC and is written like this YWW (Year 1-digit/Week 2-digits), so 315 is week 15 in 2003.

    Kind regards

  129. Kostas says:

    Thank you for your prompt response.
    Kind Regards,

  130. Curtis Mount says:

    I need a cd263 capacitor for a welding machine. I would like a price an how long to receive it.thank you very much.

  131. Noob says:

    Its Noob again. This time I have a difficult one.

    Marking on it is:

  132. Mads Barnkob says:

    Hey noob

    It is a 0.6 uF film capacitor with 5% tolerance, guessing from the physical size and capacitance it is properly not rated for more than 50VDC.

    Kind regards

  133. Francisco genao says:

    Good afternoon,

    Im trying to find out what is this . I have a backplane that have like 50 of this i dont capacitors or filter . I would like to know what is this and where i can buy it on line?

    Thank you very much,


  134. Mads Barnkob says:

    Hello Francisco genao

    I think it is a 10 uF tantalum dual capacitor.

    Kind regards

  135. Tim says:

    Here is a great cheap little tester on e bay it will test any components you can think of

  136. Tim says:

    here is a close up

  137. Mads Barnkob says:

    Hey Tim

    Thank you for the recommendation, the one I had is defective so I could use a new 🙂

    Kind regards

  138. Steve says:

    Hi Mads, this is out of a windshield wiper motor from my vehicle.Is this a tantalum +/- 10% capacitor?

  139. Donald Husar says:

    I have two capacitors I removed from a 1935 Rickenbacker amp. I need help finding a replacement part for them. Can I get help with new part # and a vendor to purchase from?

    Little Americans Dry electrolytic Cap. 8.8 @ 450V

    No Vendor on second part. Numbers are 20500 SCR 6647-18

    Any help is appreciated.


  140. Mads Barnkob says:

    Hey Steve

    I think it is a ceramic capacitor, I got no idea about the value of it. When current passes through one of the coils it is the slow setting and when it passes through capacitor and coil in series it is the fast wiper setting. So there is properly some timing change with different capacitances.

    Kind regards

  141. Mads Barnkob says:

    Hey Donald

    In old amplifiers they used capacitor that was generally too small to smooth the high voltage properly, since they were expensive or just not invented yet.

    Replace the first with a 22 uF / 500VDC capacitor, f.ex. this

    You could also go higher up in capacitance, but properly not more than 50 uF, you would risk to blow up the rectifiers.

    I got no idea about the second, maybe some pictures would help.

    Kind regards

  142. Donald Husar says:

    Mads, Thanks for the info. I’ll send pics of the other part tonight. Question: is this the best part to install? I am looking for optimun performance out of the amp.


  143. Steve says:

    Mads,your guess is as good as mine it came out of the LanRover it was assembled in Hungry. I tried to look up European symbols on capacitors and had no luck thanks though.Steve

  144. Mads Barnkob says:

    Hey Donald

    I do not believe in “audio” grade capacitors, I build my stuff with regular parts and do not spend thousand of dollars for special good sounding capacitors that need to burn in for 500 hours first, in my world that is just bullshit.

    Careful engineering and measurements will guide you to the optimum performance.

    Kind regards

  145. Donald Husar says:

    Here is a pic of the other part I need for my Rickenbacker amp.

  146. Mads Barnkob says:

    Hi Donald Husar

    That looks like an old oil and paper capacitor and a quick guess would be its 2 uF and 500 VDC, I would however like to know where in the circuit it is used to be sure about the rating.

    Kind regards

  147. sam says:

    Hi, I’m working on something that needs replacement but im having difficult time finding the exact component. what can you recommend as replacement to 223J2KV capacitor?

  148. Mads Barnkob says:

    Hey Sam

    You should replace it with a metallized polypropylene capacitor with a capacity of 0.022 uF and rated for a voltage of 2kV.

    Kind regards

  149. Pedro R Morales says:


    I have a defective microwave oven’s high voltage capacitor rated as 2100vac, 0.70uF. Can I replace it with one with the same voltage rating but 1.05uF capacitance? Do you think this increase in capacitance could be dangerous in terms of shifting a little too much the design specs of the microwave oven?

    The defective cap got shorted out, I think maybe a higher capacitance will make it easier for the cap to handle the power requirements of the magnetron. I have tried to get the right cap in terms of capacitance but it has been impossible.

    Thanks a lot in advance for your reply.


  150. Mads Barnkob says:

    Hey Pedro

    The capacitor is only used for a voltage doubler, so there is no difference in operation of the microwave oven with a 1.05 uF compared to a 0.9 uF.

    The resonant frequency of the microwaves are determined by the magnetron cavity and construction.

    Kind regards

  151. Pedro R Morales says:


    your answer releases me of my worries about altering the design too far and, at the same time, I was expecting it since more capacitance implies more current capability due to larger cap plates. The previous cap, as I wrote you, got shorted out, so I expect the 1.05uF cap I have to make a better job.

    Thanks a lot, really appreciated!!!


  152. Harry says:


    I’m trying to find a replacement capacitor.I’ve found some that has all the same writing on, 0.047uf 160 but at the bottom it says wima fky instead of fkc. I think my amplifier was made early in the 60’s so very hard to find out anything apart from that it’s a film and foil construction. Any help would be greatly appreciated. Thanks I can’t upload a photo even though it’s under 2mb?

  153. Mads Barnkob says:

    Hey Harry

    WIMA wrote a guide about substituting obsolete Polycarbonate capacitors:

    Kind regards

  154. eds says:


    I have capacitor which is 3,15 uf in a value. i don’t have an idea what is the value for it. can you please help me for the exact value?


  155. Mads Barnkob says:

    Hey Eds

    Could you upload a picture of the capacitor? I am not completely sure what you are asking about, voltage rating? You already know the capacitance is 3,15 uF.

    Kind regards

  156. Seth says:

    I have a capacitor out of subwoofer marked:
    What does that mean? Is it a .039u capacitor with a 5% tolerance?

  157. Mads Barnkob says:

    Hi Seth

    I would also say that it is a 0.039 uF 5% tolerance with a voltage rating of 100VDC. To be sure I would like to see a picture of it 🙂

    Kind regards

  158. Seth says:

    Hi Mads

    Thanks so much. Here is a picture of the little bugger.

  159. Mads Barnkob says:

    Hi Seth

    From the size of it, there is no doubt, it is a 0.039 uF / 39 nF if you like. 100 Volt rating.

    Kind regards

  160. Bigbizkit says:

    Hi guys, im a little confused…
    So, i have these two caps, Mylar and Ceramic, they both have a marking of 104,
    Are their values the same?

  161. Mads Barnkob says:

    Hey Bigbizkit

    Yes, they are both 100 nF capacitors, just made from different materials.

    Kind regards

  162. Amit Dua says:

    Dear Sir,

    Please let me know how will we calculate the exact value of film capacitor of SMPS led drivers.
    I am designing led driver with sharp IC need to know how will calculate the film capacitor value for high accuracy in my drivers.

    Amit Dua

  163. Mads Barnkob says:

    Hi Amit Dua

    I can only advice you to read how to design the circuit around the IC from the datasheet. You give me too little information to give any real advice.

    Kind regards

  164. Pingback: how to read metal film capacitor codes | mdlvcollective

  165. ANISH says:





  166. Mads Barnkob says:

    Hi Anish

    It is most likely a 1 uF / 63V capacitor.

    Kind regards

  167. Sharif says:

    Hi Mads,

    Can you help me understand this code? this is a 2002 Pontiac control unit and it not working because of that capacitor with code 4.19G
    Thanks for your help

  168. Mads Barnkob says:

    Hi Sharif

    I am not completely sure what it is, but from what I can find it might be a 4.19 MHz crystal, try to see how it is connected to the IC close by and find the datasheet for that IC to see what the purpose of the component are.

    Kind regards

  169. Ric says:

    Hi there. A lamp of mine stopped working and I narrowed it down to this capacitor where power goes in, but does not come out. Can you help me identify it so I can buy a replacement? Thank you!

  170. Mads Barnkob says:

    Hi Ric

    It is a 47 nF 250VAC MKT capacitor. If you replace it you should use one with a higher voltage rating, since the old one failed it does not hurt to upgrade the design a bit.

    A capacitor does not quite work as power goes in and out of the other end, are you sure this component is even at fault? How did you measure / determine that it was bad?

    Kind regards

  171. Ric says:

    Hi Mads. Thanks for that info. I used a multi-meter with the power connected and the dimmable lamp switch all the way up, to check all components. No power goes past this capacitor. (please see attached image) I found these on eBay. Will they work? I know you said to get one with a higher voltage rating, but I already purchased them. I can purchase more if you really think it will help. Thanks again!

  172. Mads Barnkob says:

    Hi Ric

    A regular multimeter is only made for measuring frequencies to up around 1 kHz or even as low as 400 Hz. A light bulb operates at a high frequency into maybe 100’s of kHz and you are not able to get a reading at these frequencies with your multimeter that are useful for fault finding on a switch mode power supply circuit.

    Kind regards

  173. George says:

    What is the difference between CBB22 630V 0.1uF and CBB22 400V 0.47uF Metallized Polypropylene Film Capacitors. Can I use a CBB22 630V 0.1uF instead of CBB22 400V 0.47uF, because the other is not available. It is for the replacement of a damaged LED flood light circuit capacitor.

  174. Mads Barnkob says:

    Hi George

    You can always use a capacitor with a higher voltage rating, but not always one with a lower voltage rating, as the capacitors breaks down from excessive voltage.

    It depends on the role of the capacitor in the circuit if it is possible to use another capacitance. From what I can find from LED circuits, it should have a value around 0.33 uF to 0.47 uF, as it forms a part of the current limiting network to protect the LEDs, so I suggest you find a higher value than 0.1uF.

    Kind regards

  175. George says:

    Thanks Mads

  176. Kevin Gibson says:

    Greetings Mr. Barnkob,
    I am replacing a compromised capacitor on my computer motherboard. I have included a photo of another identical one that is on the same motherboard. My question is about the value of the capacitor. From my understanding I interpret the value codes as being 16 volts and 270 picofarads (pF). My local expert tells me that it is 270 microfarads (uF).
    Thank you very much for your time.

  177. Kevin Gibson says:

    Hi Again,
    I forgot to mention that the physical dimensions of the capacitor are 8mm diameter and 12mm long.

  178. Mads Barnkob says:

    Hi Kevin Gibson

    I think you local expert is right.

    The blue mark shows that this is a polarized capacitor and most likely a electrolytic one.

    With a 16 V rating 270 uF sounds reasonable for the size of it. What the manufacturer did was reset the normal capacitance rating code to start at 1 uF. so 270 would be 27 uF and in your case 271 is 270 uF.

    See datasheet:

    Kind regards

  179. Kevin Gibson says:

    Thank you very much kind sir.
    Only good fortune to you for your assistance.

  180. Jeffry says:

    Hi Mr Barnkob,

    Can you please help me idetify the voltage value of these caps and where can i find reference to identify them

  181. Mads Barnkob says:

    Hi Jeffry

    SMD components can be a real pain to identify alone from the markings, as they often invent their own new scales using old codes. You need to either measure them or see where in the circuit they are located and if the value on them would make sense in regard to the old capacitor codes.

    It seems to me that manufacturers no longer publish schematics and now even fewer components have full markings, it might be a steps towards ending the new wave of home repairs of electronics.

    Kind regards

  182. Jeffry says:

    Hi Mr Barnkob,

    Thank you so much for the suggestion

  183. Cartel says:

    I was looking up some caps and seen this page.
    Kudos to Mads for his quick answers to the worlds questions on capacitors.

    Good job!

  184. Mads Barnkob says:

    Thank you very much Cartel 🙂

  185. Nick says:

    HI There nice helpful post… Can anyone confirm what this is?
    I am thinking / hoping a 39 pF Tantalum Capacitor but definitely not sure… It is off the logic board of a Mac Mini where all capacitors seems to be rated at 16V.

    Thanks in advance!

  186. Mads Barnkob says:

    Hi Nick

    If you are sure its tantalum, I doubt very much it is 39 pF, that capacitor technology is not for small capacitances. What I have seen on SMD markings is that they tend to be in uF, so this is properly a 39 uF / 16 V capacitor, also judged from the large size of it.

    Kind regards

  187. Nick says:

    Hi Mads,
    legend – thanks a lot for the reply… Yeah I guess you are right about the size of it so probably 39 uF… I am not sure that it’s tantalum – I just thought that these were the only ones in this shape and style… It seems very light and not metallic… So any way to check / know if it’s tantulum? Cheers again for chiming in 😉

  188. Enrique Reyes says:

    Thanks.its very useful and helpful.

  189. Younus says:

    I have a capacitor which is marked as: D473K2A

  190. Younus says:

    I have a capacitor which is marked as: D473K2A

    what is the capacitance of this capacitor.
    Do these codes hold good in ASIA as well or not?

  191. Mads Barnkob says:

    Hi Younus

    473 is 0.047 uF

    Kind regards

  192. NAREN KUMAR K says:

    Hi. My soundbar couldn’t be switched on. In many forums it was said to replace the capacitor. It reads 223j 400v. But I could not find similar capacitor here. What I get here is 224K 400v and .0022/k 630V. Which one to try

  193. Mads Barnkob says:

    Hi Naren Kumar

    Where in the circuit is this capacitor? Try with the 224K 400V first.

    Kind regards

  194. Simon says:

    What a fantastic resource. Thanks; -)

  195. Mads Barnkob says:

    Hi Simon

    You are most welcome 🙂

    Kind regards

  196. David Lania says:

    I’m having trouble with finding out what the marking 68K on a capacitor means. If you could tell me that would be so awesome. A photo is attached

  197. Mads Barnkob says:

    Hi David

    Your picture is missing, but a first guess would be that it is a 68 pF with 10% tolerance. I would be able to tell more precise from seeing its physical dimensions.

    Kind regards

  198. Melvin Nazario says:

    hi mads,
    just want to ask if is there a replacement for a 225k-250v film coated capacitor, but not a film coated capacitor? and or does a running capacitor can be use as a replacement. thank you in advance.

  199. Noob says:

    Its Noob again. Could you help me out again? Small orange capacitator!
    Is it possible to figure out size too?

  200. Mads Barnkob says:

    Hi Melvin Nazario

    You should replace a 225K/250V, which is a 2.2 uF capacitor, with the same type. Use a MKP or MKT capacitor, is it by any chance a X1, X2, Y1 or Y2 marked capacitor in a input filter?

    Kind regards

  201. Mads Barnkob says:

    Hi noob

    SMD components are always a little tricky. This does however seem to be a 2.2 uF tantalum capacitor.

    Kind regards

  202. Jamie says:

    I have a schematic that calls for 3 capacitors but I’m not sure what it’s saying.
    100M/25V electrolytic capacitor ?
    .01M 50V disc capacitor ?
    .47M/25V electrolytic capacitor ?

    Any ideas? This is all the information I have.

  203. Mads Barnkob says:

    Hi Jamie

    The notation seems to be capacitance, tolerance and voltage rating.

    The only capacitance range that makes sense would be uF, due to the first 100M would be a extremely large capacitor if it was 100 mF and a ceramic disc of 10 uF (0.01mF) is unusual.

    So to answer your question, the three capacitors are:

    100 uF / 25 VDC electrolytic capacitor
    10 nF / 50 V ceramic capacitor
    0.47 uF / 25 VDC electrolytic capacitor

    Kind regards

  204. Jamie says:


  205. awadhesh kunar says:

    Good value calculated method

  206. Jason says:

    I need assistance please…
    I have an InFocus projector where the light stopped working (it is out of warranty)

    After I opened the unit I see that 1 of the 3 Box type double sided metallized polypropylene film capacitor’s was broken and not making a connection.. I could not get it to solder on to the small stud left on the bottom.. so I need a replacement

    Pictures show the info.. This is on the circuit board that the light plugs into..
    This is what I think it is etc..
    GD (Brand) MMKP84
    Box type double sided metallized polypropylene film capacitor
    222=Capacitance (22×100 =2200pF & =2.2nF & =0.0022uF)
    J=Capacitance Tolerance (+-5%)
    700=Rated Voltage

    Any help where I can get 1 of these??
    Thanks in advance

  207. Mads Barnkob says:

    Hi Jason

    Ebay is properly your best bet. Just find a 2.2 nF MKP capacitor with a voltage rating higher than 700 VDC, like this:

    Kind regards

  208. Jason says:

    Thanks Mads Barnkob for the reply…

    I think this is the actual spec sheet etc for this item:

    I wish I could find the exact one somewhere…

    I call the Manufacture of the projector (InFocus) they told me that their authorized repair company might be able to sell me the part (the are Mendtronix) but when I called them they told me that InFocus does not allow them to sell their proprietary pats!

    I searched on E-bay like you suggested, but I am not sure on the Voltage, as these specs say 700V AC, also on the actual size dimensions..

    The one you suggested do you think it matches the spec sheet close enough?? +-5% compared to +-10%? plus it is 1600VDC not AC??

    Again, any suggestions anyone has, or if anyone knows where to get this exact item I would be indebted to you…



  209. Mads Barnkob says:

    Hi Jason

    700 VAC means that +700 going to -700, as it is alternating current. A MKP capacitor of a DC voltage rating above that span is just as good, just add some more voltage overhead, maybe get a 2000 VDC rated or even higher.

    Almost all MKP film capacitors are with the same performance to equal sizes, do not worry too much about getting a original, that just sounds expensive 🙂

    From the pictures you can see that it is 3 capacitors sitting in series from the transformer to the output of the 2 grey wires, so it is basically a 3×700 AC rated and 2.2nF/3 capacitor bank. So I would not worry about 5% or 10%. If you do, just buy 10 and match them with LCR meter.

    Kind regards

  210. Ravs says:

    Hi Mads,

    I have a capacitor with 1K2 marking on it? Would you know its value? Any help is appreciated.

    Thank you!

  211. Mads Barnkob says:

    Hi Ravs

    It does have the form of a silver mica capacitor, but not any of the old marking codes from those times.

    Maybe it it a inductor or some coupled component like LR or LC. You will have to solder this one out and measure it to be sure.

    Kind regards

  212. Joe says:


    Trying to find if this is a ceramic capacitor, photo is taken from the inside of the controls cabinet of a 1960’s machine tool known as a horizontal boring machine. We had a problem where the a mains cable to the DC Motor wore through the sheaving and arced up. The machine does still work but the DC motor wont turn on however the motor is fine, just looks like the signal from the stop/start button isn’t telling the contactor to pull in or out. The only thing we can see blown are these things in the photo so that’s what the best place to start. We don’t know what they are except look like ceramic capacitors and a Google search has lead me here.

    Can anybody help us????

    Many thanks.

  213. Hendrik Nentjes says:

    Hi there!

    Could you help me with the following caps?
    I can’t figure out how to get the right values with your tables..
    They come from an amplifier and are 6,5 and 8 mm in diameter.

    Thanks in advance!!

  214. Mads Barnkob says:

    Hi Joe

    I do not think those are capacitors. They might be old disc style power resistors. 150 Ohm at 4 Watt, try to desolder one of the good and see if it measures 150 Ohm with a multimeter.

    Kind regards

  215. Mads Barnkob says:

    Hi Hendrik Nentjes

    These are SMD electrolytic capacitors. Both are 47 uF in capacitance. The small one is rated at 6 VDC and the large one 35 VDC.

    Kind regards

  216. Steve Teodecki says:

    I’m trying to understand what voltage this radial type capacitor is. The top row reads 8019P and the second row reads 100L.
    I’m guessing it’s a 10pf capacitance based on the 100. Is L a rating between K=10% and M=20%? My real question is the voltage. There is no 1K or other code before the capacitance code. What does the 8019P mean?

  217. Mads Barnkob says:

    Hi Steve Teodecki

    I would need to see a picture of it. I do however doubt that a capacitor that fits so much writing would only be a 10 pF, as that is really small. The numbers does however not ring a bell.

    Kind regards

  218. Wypl says:

    Ola poderia me tirar uma duvida
    2u2k seria igual a 225j ??

  219. Szop Gracz says:

    Could anybody please tell me What is the voltage rating of this thing?

  220. Szop Gracz says:

    Alright after inspecting the circuit I’m guessing it’s 630V.

  221. Szop Gracz says:

    Well I just measured the voltage with more accurate equipment and it was over 1kV on this component so my previous guess I must be wrong. Is this even a capacitor?

  222. Mads Barnkob says:

    Hi Szop

    I would guess that it is a capacitor, 15 nF and 630 V, now the question remains is it rated for AC or DC voltage, if it is 630 VAC, 1 kVDC is not impossible. But what about your measuring meter? Are you measuring peak AC, RMS AC or DC?

    Kind regards

  223. Andrew says:

    I Have an old NV1 Diamond Edge 3D Graphics card from 1995 and its got some blown Caps.
    they read as follows
    I’m not exactly sure what the 5N and the 10 would stand for, my guess is that 10 is the uf?

  224. Mads Barnkob says:

    Hi Andrew

    If it is a electrolytic capacitor, aluminium can with black markings/text. Then I think you are right, that it is a 10 uF / 16 V capacitor. I attached a similar to what I think you mean.

    Kind regards

  225. Randy says:

    Hello -I am trying to verify all info on this cap to locate a replacement. It is used in a 110VAC motor starting application and is in parallel with the stop button. It is starting a small induction motor directly. The motor also has a cap in parallel with the motor. This was installed on a group of industrial machines that were built around 1979.

    My guess is that it is a .01 uF with +/- 20% tolerance. My thoughts are its rated at 1000VDC (but I do not fully understand why DC rating is used in an AC circuit). The E marking I am unsure about.

    What would be the 2 inside the circle at the top? Is that a manufacture logo?

    Any help you could give would be greatly appreciated.

  226. Mads Barnkob says:

    Hi Randy

    Did you forget to upload the picture?

    It could sound like you have a start capacitor and a run capacitor.

    Roughly you can say that DC rated capacitors, if they are film or foil types, can be used in AC circuits if the peak to peak AC voltage is within the DC rating. Datasheets normally state a AC rating for DC rated capacitors.

    Kind regards

  227. Randy says:

    Sorry about that. Here’s the pic.

  228. Mads Barnkob says:

    Hi Randy

    That is a ceramic disc capacitor, rated 1 kV / 10 nF.

    The circled 2 is properly a manufacturer logo.

    Kind regards

  229. Randy says:

    Thank you so much! Greatly appreciated.


  230. Ema says:

    Hi i m in search of what kind of cap is this. Seems a ceramic disc but then no clue about voltage and Farads. Can you help me eith it? It is btw the output leads of a ac/dc transformer in parallel with a small bulb. The board belongs to a Bose 901 IV series equalizer. Thanks in advance

  231. Mads Barnkob says:

    Hi Ema

    Please upload a picture of the capacitor in question.

    Kind regards

  232. Prakash Chand says:

    Hi, we are manufacturer of LED lamp of 3 to 7w 220vac. In this process we use a capacitor CBB22, 125J 400V. But this capacitor get blast on 220vac supply.
    Please suggest me, how can resolve this fault. If need to change capacitor,how mu h rating will be suitable.

  233. Mads Barnkob says:

    Hi Prakash

    I do not do electronic design for free for manufacturers, it sounds like there is something seriously wrong in your circuit or design for this to happen.

    Kind regards

  234. mot says:

    hi mads is it possible to replace my faulty 225j 400v capacitor with a 474j 400v?

  235. Mads Barnkob says:

    Hi mot

    It depends what application the capacitor is used in. You have a 2.2 uF capacitor there now and wants to replace it with a 0.47 uF capacitor, with only 25% of the original capacitance this could affect how your circuit works.

    Kind regards

  236. mot says:

    I am currently working on my rechargeable LED lamp. The unit is not charging and i found out that one of its capacitors(CBB22 225J 400V) blown out. However, i cannot find same capacitor in the market. The only available replacement is 474J 400V, will it work?

  237. Mads Barnkob says:

    Hi mot

    Is it a part of the mains input filtering circuit? It will properly work with 474J, but noise filtering might be less than its original design.

    Kind regards

  238. mot says:

    Thank’s mads for your help.! The replacement capacitor seems fine and the unit is finally working. Greatly appreciated.

  239. Omkumar a v says:

    2J102j capociter remove and 2j472j capociter fixed . This is normal r equal value ?
    please give me best ideas. Thank u.

  240. Mads Barnkob says:

    Hi Omkumar

    You replaced a 1 nF capacitor with a 4.7 nF capacitor, depending on the type of circuit this could have disrupted timing circuits. If it was just some kind of decoupling in a power supply rail, it will work just fine.

    Kind regards

  241. Nick says:

    I have a capacitor out of an automotive Ignition Module that’s failed… I’m looking for it to repair the module. It’s numbered as follows.. 103J630/N1SV41.. first number above the second… no color stripes.. it’s orange coated… symbols on the board is of a fixed cap.

    Can someone please help me locate one? Thank you, Nick. (614) 209-6425

  242. Mads Barnkob says:

    Hi Nick

    Sounds like a metallized film capacitor, you can find these in many place. 103 is a 10 nF and 630 is 630 VDC rating.

    Kind regards

  243. najib says:

    Hi everybody.
    Need help. Someone could explain this code CTU272K printed on capacitor.
    (I guess 272k means 2700pf tolerance 10%) but CTU ?

  244. Mads Barnkob says:

    Hi najib

    I think that CTU is just the model number of the manufacturer. There seems to be some Russian made capacitors that uses this model-numbering with CTU in front.

    Kind regards

  245. sabil says:

    Can anybody tell me the equivalent capacitor of 4.7nf 250v?
    please do the needful at the earliest.

    thanking you.

  246. Mads Barnkob says:

    Hi sabil

    That would still be 4.7 nF and 250V rating, you can get these values in different types of capacitors, depending on which application you need to use it in.

    Kind regards

  247. dire_wolf says:

    What does 18L stand for in a 18L/683 (0.068) metal film capacitor and what is A1 in a 271/A1J (270 pF) ceramic capacitor?

  248. Gbenga olawuyi says:

    I FIND IT DIFFICULT TO GET 22nf 600v capacitor in my local market ,what is the replacement pleases .I need help

  249. Mads Barnkob says:

    Hi Gbenga

    You can use any capacitor, of same type material, that is 22 nF but with a voltage rating of 600 V or higher, that might make it easier for you to find one, maybe rated for 1000 or 2000 V.

    Kind regards

  250. Vamsi says:

    I want difference between 225k,400v and 225j,400v

  251. Mads Barnkob says:

    Hi Vamsi

    K is 10% capacitance tolerance and J is is 5% tolerance. The J rated capacitor is guaranteed to be closer to the given capacitance value.

    Kind regards

  252. Noob says:

    Hi Mads, Its Noob again.
    Back in ”June 22, 2015 at 01:14” post, you helped me out with one capacitator.
    Finally I found some time to replace the part, but and used a WIMA 0.68uF 63V cap, to replace the old one. The new one blew up instantly. Then I replaced with WIMA 0.68uF 275V, and the unit turned on perfectly.
    Thanks for your help.
    But the problem is tricky. Original capacitators size was 15 x 15 x 5mm. And there is no place to instal a bigger capacitator.
    The thing is that I cant find any 0.68uF 275V capacitator to fit the place.
    All are bigger.
    Should I use capacitator with smaller capacitance?(those should be smaller in size)

    Or maybe just keep on looking, till I find what I need. (Still a lot manufacturers to browse through)

  253. Basem says:

    Hello please help i can understand this mkt capacitor sympols can any body explains it ?

  254. Mads Barnkob says:

    Hi Noob

    Could you extend the leads of the capacitor and place it somewhere else in the circuit? It sounds like you tried with one with too low voltage rating, which is why it blew up. Unless the circuit around the capacitor delivers a too high voltage for the original design.

    Kind regards

  255. Mads Barnkob says:

    Hi Basem

    It is a MKT, metallized polyester foil, type capacitor with a capacitance of 30 nF (5% tolerance, its the letter J) and voltage rating of 250 V.

    Kind regards

  256. Aries Aguilar says:

    Hi. My cApastor label as 47nj 630.. i can’t find a capasitor label as 47nj 630.. what is the best replacement value for my capasitor… thanks

  257. Mads Barnkob says:

    Hi Aries

    If the capacitor is a part of a RC timing circuit, you need to find one with the same capacitance, but the voltage rating indicates that this is not the case. You could try to use a 33nF, 47nF or 56nF capacitor instead, with a voltage rating of 630V or higher, maybe you have better luck finding one at 1000V rating.

    Kind regards

  258. Aries Aguilar says:

    Sir mads.. it is connected from ground through the collector of horizontal output transistor of colored TV..

  259. Mads Barnkob says:

    Hi Aries

    I would advice you to use a capacitor with a higher voltage rating than the original, but with the same capacitance, else you might risk changing the scanning characteristics of the line output transformer that is supplied by the high voltage transistor.

    Kind regards

  260. Ben Sturdy says:

    Very useful table thank you so much. This was easily the best information I could find on the internet and it has helped me understand how to find the right capacitors for building a synthesiser (so far so good – at least partly working!). The different electronic parts suppliers using NF or UF or PF interchangeably seemed impenetrable. You have made me realise it is easily understandable (usually!).

    Wishing you all the best for 2017.

  261. Mads Barnkob says:

    Hi Ben

    Thank you and I am glas that I could help you learn and move on the electronics hobby. Do you have anything online to show about your synthesiser?

    Kind regards

  262. Michael says:


    I have two capacitors that need to be replaced on a motherboard. I’m new to the realm of capacitors and soldering so I’m not sure how to seek out replacement capacitors.

    I’ve attached a pic of the capacitors I’m looking to replace. They have a 5N 10 16v on the top of each. I was wondering if you could point me in the right direction on how to search for a suitable replacement as my search for 5N 10 16v capacitors hasn’t lead me to anything I feel is a match.

    Thanks for your time.

  263. Joseph says:

    Very use full think you

  264. Mads Barnkob says:

    Hi Michael

    Those are SMD electrolytic capacitors, as the soldering pads are quite large, you could solder in a regular through-hole capacitor instead, if you can not source the right ones.

    They are 10 uF / 10 V electrolytic capacitors and that is what you should replace them with.

    Kind regards

  265. Michael says:

    Thank you Mads for your reply.

    Just for my own future reference, could you tell me how I’m supposed to interpret the letters/numbers on these capacitors?

    In looking at them saying 5n / 10/ 16v on the capacitor, I’d assume it’d be 10uF / 16 V and not the 10 uF / 10 V you recommended.

    Thanks for your time once again.

  266. Mads Barnkob says:

    Hi Michael

    You are absolutely right, I did of cause mean to write 16 V. Sorry for that.

    To learn how to read the capacitors, you just have to see a lot of them, check out their datasheet from the manufacturer and then at some point you can easily read the different marking systems. One of the problems with SMD components is the lack of a marking standard, but most will always have capacitance and voltage rating + a manufacturer code or series number. Then just rule out what could be what. 5N is not really related to anything, 10 alone as a number is known from film capacitors where you just write the capacitance in uF in a plain number and if a number ends with V, its usually the voltage rating.

    Kind regards

  267. Freeborn Umukoro says:

    I find your post very helpful, I hail you. But my problem is to download it so that I can reference to it at my convenience.

  268. Mads Barnkob says:

    Hi Freeborn Umukoro

    Just beneath the article, before the comments begin, the 2nd icon from the left is for printing the article. If you only print the first 3 pages you should have all the essential information on paper or PDF.

    Kind regards

  269. José Vallejo says:

    Can you explain me about this nomenclature for this capacitor CY1K2 332J?. The only I understand that is a capacitor with value 3.3 nF with tolerance 5%, but I do not find explication to the CY1K2. Please, if you can make me free about this doubt. Thank you.

  270. Mads Barnkob says:

    Hi José Vallejo

    It is either just a manufacturer name/capacitor product type name etc. The “Y1” could be that it is a capacitor rated for mains to ground decoupling. These are called safety certified capacitors, if you want to find more about this subject.

    Kind regards

  271. Mauricio Torres says:

    Hey I have this capacitor that reads, Z100 on the top line and 224j on the bottom. Now i think ive come to the conclusion that this is a .22uF 5% capacitor but, im not sure of the voltage. Does the Z100 mean 100 volts? What does the Z stand for? Would really appreciate the help!! Attaching photo.

  272. Mads Barnkob says:

    Hi Mauricio Torres

    It is most likely a 100 VDC rating, the letter in front can vary from manufacturer to manufacturer. See this picture for different metallized film/polyester capacitor that has a voltage rating of 400 VDC.

    Kind regards

  273. Marco says:

    Hi, I think i have a bad capacitor in my humidifier and i think it is this one. It has M 473J NP 200Vs0705 written on it. Can you please tell me how to test if its bad? Also if it is bad what can i replace it with? When i search the internet all i can find is 473J capacitors for guitars and they look slightly smaller and orange in color.(see pic)

  274. Mads Barnkob says:

    Hi Marco

    You need a digital multimeter than can measure capacitance, if it does not measure 0.047 uF or 47 nF within 5% tolerance (J stands for that) it is most likely broken. You could also use a LCR meter to do a better and more thorough analysis of the capacitor.

    You can look for many kinds of metallized film capacitors with a rating of 0.047 uF or 47 nF at 200 V rating, with these search terms you should be able to find one. The smaller orange capacitors are most likely due to newer materials and thinner films, with same breakdown voltage properties as the old ones, but makes them able to make smaller components.

    Kind regards

  275. Marco says:

    Hi Mads, Thanx for the speedy response. I have a digital multimeter but i dont know the setting for checking capacitance, i did try to find the setting on the internet and dont think my meter can measure capacitance(see pic), will try to get my hands on one that can.
    From what i gather you are saying that these smaller 473J 200v capacitors being sold as guitar capacitors are the same as the one i need only more compact. Is this one in the pic below a good replacement?(0.047uF @ 200V GUITAR TONE CAPACITOR ORANGE DROP 715P SPRAGUE – SBE)
    Do appreciate your help.

  276. Marco says:

    Hi, pic of my multimeter.

  277. andrew birchmore says:

    Hi I have a TV and this capacitor has blown could you please point me in the right direction for what I need and where I could get 1

  278. Marco says:

    Hi Mads, It turned out to be a faulty resistor, my humidifier is fixed. Thanx for your help.

  279. Mads Barnkob says:

    Hi Marco

    Good that you found the error. The capacitor you found would make a good replacement, just be vary about cheap capacitors being resold for music/amplifiers often have a much higher price tag than their worth. It is better to buy from real electronics dealers.

    Your multimeter can not measure capacitance.

    Kind regards

  280. Mads Barnkob says:

    Hi andrew birchmore

    You need exactly what it says on the capacitor, a “100nF 275VAC MKP X2” capacitor, the important part here is the X2 rating, it is a safety capacitor that it made specifically for being installed between phase and neutral in a noise input filter. Read more here:

    Kind regards

  281. andrew birchmore says:

    ok thankyou for your help so with it being a 100nF that would be equivalent to a 0.1uF ?
    if so would this do as a replacement:

    thankyou for your help and sorry about the questions iv never delt with this kind of capacitor before and the fact it said nK threw me off

  282. Mads Barnkob says:

    Hi andrew birchmore

    Yes, it can also be written as 0.1 uF, you found a perfect replacement there.

    Kind regards

  283. gsmd2 says:

    it is amazing that this thread is ~3 years old !

    I have an LG monitor and it has 4 capacitors
    I could not make the symbols at the start, tried several code calculators and read so many references with codes and still cant make it.

    especially the one the looks like 6 36MJ 33 100V (probably 100V 33uF but the rest)
    Also what is the manufacturer of this, could you explain ?

    many thanks 🙂

  284. gsmd2 says:

    and the photo

  285. Mads Barnkob says:

    Hi gsmd2

    The first comments are from 2010, so it is actually more like 7 years 🙂

    It is alsmost impossible to tell the manufacturer of these SMD electrolytic capacitors. The only thing you have is the first line which is the production code.

    Second line is the value in uF, so here you have 33 uF, 100 uF and 68 uF.

    Third line is the voltage rating and tolerance (if there is a letter), so you have 100V, 16V and 35V capacitors and J and K are the tolerance ratings, this could f.ex. be 5% and 10%

    Kind regards

  286. Anyone who can help me with the size of these 2 capacitors ?

  287. Mads Barnkob says:

    Hi Richard Pedersen

    C7 is a 0.01 uF(or 10 nF) / 50Vceramic capacitor. C8 is a timing capacitor sitting together with the crystal at the left, this is a 30 pF ceramic capacitor.

    Kind regards

  288. BiWeat says:

    HI Mads Barnkob

    I have a cap as per picture can you identify it’s 470pF or 47pF? thank you.

  289. Mads Barnkob says:

    Hi BiWeat

    I would take that as a 47 pF 10% 400V capacitor.

    Kind regards

  290. BiWeat says:

    HI Mads Barnkob,

    Thank you for you help.

  291. H says:

    If your capacitor is marked 2j472j
    Then it means 630v ,4.7nf,5%tolerance

  292. Mads Barnkob says:

    Hi H

    I agree with you, 2J472J would be 630VDC, 4.7 nF at 5% tolerance.

    Kind regards

  293. Pratul Karmokar says:

    Hi Mads!

    I have 2 metallized polyester film capacitors with markings
    1. CL21 335K 250V
    2. CL21 225K 250V
    As far as i can make out of it they are both 250V, what do the others stand for?


  294. Mads Barnkob says:

    Hi Pratul

    CL21 is the manufacturers model marking, 225K is 225 for 2.2 uF, as you can read in the table at the top of this page. K is 10% capacitance tolerance. 335 is 3.3 uF. You are correct about the 250V rating.

    Kind regards

  295. Hi.can i replace 3105j 400v from 105j 400v?

  296. Mads Barnkob says:

    Hi Renan Bandojo Endat

    I am not too sure if you wrote something wrong or what kind of capacitor you have in mind. Could you please show a picture of the 3105J capacitor?

    Kind regards

  297. Michele Mccucent says:

    Please how can you explain to me T1,T2 and T3 in the circuit with only two (2) legs or paths and what really is it


  298. Michele Mccucent says:

    Please can I use 437j 100v in place of 437j 400v???

  299. Mads Barnkob says:

    Hi Michele Mccucent

    You can not use a 100VDC rated capacitor when your input voltage is 320VDC, use the 400VDC rated as already meant for the ciruit.

    T1, T2 and T3 is each their winding on the same transformer, the dotted line indicates the iron core/ferrite core or the transformer. It seems like T3 is a feedback winding and T1/T2 is the primary/secondary windings. This is my best guess from the limited information about that circuit.

    Kind regards

  300. Czar says:

    Good afternoon mads

    Can i replace a capacitor 50v 15000uf to 63volts 15000uf

  301. Mads Barnkob says:

    Hi Czar

    Yes, that would be a good replacement, a little higher voltage rating than the failed one you are changing often means that it will last longer as it will be less stressed from operating close to its voltage rating, that is really what kills the most capacitors, too high voltage in a too hot environment.

    Kind regards

  302. Zack says:

    Can i replace 47uf 3kv capacitor with other capacitor?
    Any suggestion which uf is equal with 47uf?

  303. Mads Barnkob says:

    Hey Zack

    In a high voltage power supply is even more vital to not overload the power supply that this capacitor is a part of, I do not recommend that you exchange it with any other value than 47 uF.

    Kind regards

  304. Bob says:

    I have a power unit for a pool cleaner. The motor was stuck so i freed it up. input to the unit is 110 ac output is 48 dc. Got the motor going off a power supply only up to 40v dc. motor ran at only .6 amps max. Power unit says it is for 2.2 amps. I thought i would jump power unit to motor to see it run at a full 48v. Unit did nothing but flash when whole unit was complete before. As i jumped it the motor was working but smoke started to come out of power unit. what i believe i did was have a strand of wire short across both pins of motor. motor works fine on a power supply. Opened up unit and found a burnt polyester cap with # 333J on top and 630F under it any help what this is? Thanks Bob

  305. Mads Barnkob says:

    Hey Bob

    That is a 0.033 uF (or 33 nF) 630V capacitor, if you can see any X1, X2 or Y markings on it, be sure to use a new capacitor with the same ratings.

    Kind regards

  306. jordan says:

    Dear Mads !

    could you please tell me what is the voltage and value of a capacitor with 224k ?
    see picture for details.. please explain about the replacement also. which kind of a capacitor could i use instead ?

  307. Mads Barnkob says:

    Hi Jordan

    It is a 220 nF polyester capacitor and if it has no voltage rating printed on it, I would assume its 50V, also from the surrounding 35V electrolytic capacitors.

    Kind regards

  308. Peter says:

    hello can you please tell me what the voltage is for these two? I am a bit confused. Why are the dots there?
    thank you in advance.

  309. Mads Barnkob says:

    Hi Peter

    I am not sure what the dot means, but they are certainly 250V capacitors.

    Kind regards

  310. Peter says:

    Thank you Mads!

  311. ken says:

    Ceramic Disk capacitor marked 2C 500v. There are no other markings

  312. Mads Barnkob says:

    Hi Ken

    It must have some more information if its part of the 2C series from Vishay:

    Kind regards

  313. Tunde says:

    can I replace 224j with 154j

  314. Mads Barnkob says:

    Hi Tunde

    That is a 0.15 uF vs a 0.22 uF capacitor, unless it is sitting as a part of a timing circuit, I do not see any problem with a slightly lower capacitance. If it is a filter, the filtering frequencies can change and more noise might be a result.
    If it is a safety capacitor like a X1, X2 or Y1, its important to only replace that with another safety rated capacitor.

    Kind regards

  315. Lukman Efendi says:

    Dear Kind Mads,

    Could you help me identify this capacitor. I already go to electronic parts store, but the staff could not identify the value. I already bought the replacement twice, which is not compatible. Perhaps because i bought the wrong values. I already test it with ESR meter but detected as broken. The cap marked is

    Thank you
    Lukman Efendi

  316. Maddy says:

    Thanks! very useful

  317. Mads Barnkob says:

    Hi Lukman

    Which replacement values did you try? How did you know that it did not work? There could be other defects in the circuit that has nothing to do with the capacitor.

    I would guess on 0.25 nF / 250 pF, not just from the N used a delimiter, but also its physical size and voltage rating.

    Kind regards

  318. Lukman Efendi says:

    The 1st bought marked 221. Based on your table, that is a 0,22 nF (please correct me if i’m wrong). And the 2nd bought marked 10K and size bigger than the 1st, i assume that would be 10000pF=10nF. For the 10nF, wouldn’t that be lot way to high to replace a 0,25nF. But both replacement size smaller than the real one, aka 0,25nF. And both was choosen by the staff of the circuit parts store. Thank you for your help and reply, Mads. I really really appreciate it.

    Best regards
    Lukman Efendi

  319. Lukman Efendi says:

    Well its a small board, i litterally soldered out every parts and test it one by one. It used to power up a scanner’s TL Lamp from a HP printer scanner. It wont turn on, but some times after turn it on and off several times, it can work again. But now it just wont. Strangely when turning off, i can see a quarter part of the lamp is being light up just a glimpse though. Printer service center says they had to replace whole board, since its already discontinued for the support and parts, so they cant repair it and wont take it in. But i already fall in love with this printer, it has many history with me. So i’ll keep it even it will take as many time for me to repair it.

  320. Mads Barnkob says:

    So it seems to be the output capacitor of a small high voltage power supply, the 3 kV rating is vital due to the voltage there, but a rather wide range of low capacitance capacitors should work there, you might even need higher capacitance for it to maintain the high voltage when the lamp is connected as load, it sure sounds like the voltage is not stable enough to keep it lit.

    A funny thing is the name of the manufacturer of that little power supply, “Boom power”!

    Kind regards

  321. Glen Bigelow says:

    What is a HL150 12 volt speaker capacitor? What do I buy as a replacement?

  322. Mads Barnkob says:

    Hi Glen Bigelow

    Please attach a picture of the capacitor in question, this will help me help you 🙂

    Kind regards

  323. Michael says:

    Am Developing Interest On This Transformerles Power Supply My Quastion Is, This VDC Value Represented By Ie’2J’ Is It The Load Voltage Or? And How Can I Determine The Zenor Diode Code For Voltage Used?

  324. Mads Barnkob says:

    Hi Michael

    The voltage rating of a capacitor is the absolute maximum rating, you should always keep a head room for voltage swings, transients and unforeseen events. If you always keep a 20% head room you will also expand the expected life time of your capacitor.

    For zener diodes, look in the datasheet from the manufacturer to find the code for the voltage you need.

    Kind regards

  325. Eric says:

    I am trying to replace a .47 MFD capacitor at 250wv, and have found a color coded capacitor, with the color bands being: 1 yellow, 2 violet, 3 yellow, 4 white, and 5 red a little space further apart from the rest. Is this the correct replacement to the .47 MFD at 250 wv, capicator. Thank you Eric mootz

  326. Mads Barnkob says:

    Hi Eric

    According to then that is a 0.047 uF capacitor with the colour codes you described.
    As it is only old capacitors that use this coding, where on modern capacitors it is written in plain text, I would recommend to find a new and more modern capacitor than such old ones.

    For 0.47 uF, the third band had to be green.

    Kind regards

  327. Bill says:

    Please, help!
    Side 1- µ1 J100. Side 2- 1UN. Color – blue.

  328. bill says:


  329. Mads Barnkob says:

    Hi Bill

    It is a 100 nF MKP capacitor, with 5% tolerance and voltage rating of 100 VDC.

    Kind regards

  330. Bill says:

    Thank you!

  331. RL says:

    I have a capacitor marked as ” 1000 µ-M ” 25 Volt. I’m assuming it’s a standard 1000 uf 25 volt electrolytic cap, but it’s bigger than the newer caps of the same value I have here.

  332. Mads Barnkob says:

    Hi RL

    You are right, that it is a 1000 uF, 25 VDC capacitor, M is for 20% tolerance.

    New capacitors made with newer/better materials are just smaller than what it was just 10 years ago. Especially new materials with a higher dialectic constant helped making them smaller for the same voltage rating.

    Kind regards

  333. RL says:

    Thanks Mads, much appreciated!

  334. Jose Vazquez says:

    Hola Bill.
    Tengo un condensador marcado con : M474K1025 y debajo 550 MFF.
    Mi duda es de que voltaje es, y por cual puedo sustituirlo.
    Te envio una imagen.

    Un abrazo.

  335. Demian says:

    Hi guys, I have a surfase mounted capacitor like this.

    It’s mounted on the TV power supply board.
    Any idea what I should replace it with?

  336. Mads Barnkob says:

    Hi Demian

    It is a 0.047 nF capacitor, but the voltage code 2N is not a official EIA voltage code. So it could be somewhere between 100 VDC and 1000 VDC. You have to check some other component markings that sits around it as the part of the same circuit and see what their voltage rating is to find a proper one.

    But given the low capacitance, it could be 1000 VDC rated. Or even higher if it part of the high voltage supply for the back light. But EIC code says that voltage ratings above 1000 VDC starts with 3 and not 2.

    Kind regards

  337. Jose Vazquez says:

    I have a capacitor marked with: M474K1025 and below 550 MFF.
    My question is what voltage is, and why I can replace it.
    I send you a pic.

    Thank you.

  338. Mads Barnkob says:

    Hi Jose Vazquez

    You need a Metallized Polypropylene Film Capacitor (MKP) with a capacitances of 0.47 uF and I guess that the voltage rating is 550V, so since it blew up maybe pick one with a higher voltage specification.

    You can also look at other components around the capacitor to get a better understanding of what voltage it might be rated for.

    Kind regards

  339. Jose Vazquez says:

    Thank you Mads.

  340. Bas says:

    Hi there,

    How would I rate these in uF?

  341. Mads Barnkob says:

    Hi Bas

    805 is 8 uF and 246 is 24 uF

    Kind regards

  342. Vijay says:

    Nice explanation

  343. NIRAJ KUMAR says:

    Hello MADs,
    I m trying to copy an amplifying board. I got stuck with these three polyester capacitor.
    So, i need your help to check whether i m correctly reading the value of capacitor or not. please let me know.
    1. m250 47nJ means 250V 47 nF 5% tolerance
    2. CY3A 221J means 1000VDC 220pF
    3. 224J 100ME means 220uF 100VDC
    Also. can u check Capacitor “1” is m250 470j or m250 47nJ . which one ?

    Thanks a lot.

  344. Mads Barnkob says:

    Hi Niraj

    1. You got them all right, the 47n is for 47 nF, J is the tolerance.
    2. I don’t think its 1000 VDC rated, just the small size and distance between legs tells me it must be in the range of the others, like 100-250V.
    3. This is 224 = 0.22 uF ~ 220 nF

    Kind regards

  345. K.s.Dr.zoysa says:

    Very essential capacitance values help for beginers .if you can show codes like 105j 335j 822j125j and values of that is great help,How ever millions thanks.ZOYSA.

  346. Kike says:

    Sup! I have a capacitor reading MIAL 4700j
    It’s silver, cylindrical shaped… about 7mm large and 3mm thick…
    Am looking for a .047uf, do I have the correct cap?

  347. Mads Barnkob says:

    Hi Kike

    I think it could be a 4.7 nF capacitor with 5% tolerance.

    Kind regards

  348. kris says:

    I am searching for electrolitic aluminium capcitor:

    any clue?

  349. Ajith says:

    I want to know what is the minig of
    2v155kz capacitor full minig

  350. Mads Barnkob says:

    Hi Kris

    That is a 100 uF electrolytic capacitor rated for 35 V

    Kind regards

  351. Mads Barnkob says:

    Hi Ajith

    That is a 1.5 uF 10% tolerance 350VDC capacitor.

    Kind regards

  352. Foxcap says:

    Best site for Capacitor.
    Thanks Admin

  353. Aman bharti says:

    Very good information, I have a question. A metallized film capacitor code is CBB22 474j 400v. What is exact meaning of these name. Please Reply

  354. Mads Barnkob says:

    Hi Aman bharti

    CBB22 is the manufacturers name for the capacitor series, it is a 0.47 uF capacitance with 5% tolerance and a 400V maximum voltage rating.

    Kind regards

  355. tony says:

    Hi please, can someone help me find something to replace this 470nj Cap
    a UK supplier would be good as in a rush, it says 470nJ on the cap is this a code or does it mean the same as 0.47uF? presume 63v is the voltage rating.

  356. Mads Barnkob says:

    Hi Tony

    Farnell, RS Components or Mouser can deliver from day to day. But it will cost you.

    You are right, it is 470 nF / 0.47 uF at 63V

    Kind regards

  357. Tony Arnold says:

    100J X 400V
    I assume this = 10pf X 5‰ X 400V
    Many thanks
    Tony Arnold

  358. Kamil Metze says:

    I need to replace a capacitor but the marking confuse me… please help out? 🙂

    Markings: 1J MEF 400

  359. Mads Barnkob says:

    Hi Kamil

    That is a 100 nF, 400 VDC capacitor, 5% tolerance.

    Kind regards

  360. prince da_je says:

    In my lg tv d bosta capacitor(450v1000uf) is faulty n is hard 2 get so what capacitor can use in replacin it

  361. Mads Barnkob says:

    Hi Prince da je

    A electrolytic capaitor with ratings of 450V and 1000 uF should not be hard to get, but generally you can replace it with any 1000-1500 uF capacitor with a voltage rating higher than 450V.

    Kind regards

  362. Muzammil Khatri says:

    Dear Sir,

    Please advise the Uf value of the attached capacitor.

    Best Regards,


  363. Venkata R Reddy says:

    Hi guys,
    I am using an AC capacitor of 100 uF, 250 V, 50 Hz. When I am using the capacitor in RC series and parallel, the following are the shape of the currents. My aim is to connect RLC in parallel with the resonant circuit.

  364. Mads Barnkob says:

    Hi Muzammil Khatri

    106 is 10 uF.

    Kind regards

  365. Muzammil Khatri says:

    Hi Mads,

    Thank you for your kind update. My fluke multimeter is reading only 1.45uF when I measure this 106k capacitor. Will get it replaced with 10Uf. Your support is highly appreciated!

    Best Regards,


  366. Noel says:

    I am looking for a 106mic 500 volt orange capppy. It looks like it was filled with alluminium. Looking at you code I think it is 2H 106M.
    Is this correct and where can I find one in Australia. Thank.

  367. Giles says:

    Please could you tell me what type of capacitor this is and if replacing both would sort out my ceiling fan humming and low speed issue? There appear to be 2 of these yellow type capacitors but I don’t know what type they are to try and source replacements. The one is: 2.0μF 400VAC -25-70°C and the one behind it is 1.5μF 400VAC -25-70°C – are these polypropylene film capacitors by any chance?

  368. Mads Barnkob says:

    Hi Giles

    Yes, these are most likely polypropylene film capacitors, but whether they are MKP or MKT is hard to say.

    Is the fan a 3 phase type using capacitors for emulation of the 3rd phase, when supplied with hot and neutral? I would think that the fan itself has failed due to wear, dirt in ball bearings, dried out lube or damaged windings in the motor.

    Kind regards

  369. Merrill Burton says:

    Hello Mads, [1970s] motorcycle ignition box,ac voltage operation from a genorater,range unsure, bike is 12v Kawasaki.
    Circuit board has 5x638B, 1x12DC, 1X135B, also 2x resistors I know the value off.
    No visible + or – marks although the ID marks on three face one way and four of them face the other way.They are dark green dics about 12mmx5mm.
    Can you ID these for me please. Regards Merrill.

  370. Mads Barnkob says:

    Hi Merrill Burton

    I looked at a few motorcycle rectifier/regulator schematics and I do not think there is capacitors present. It might be TVS to suppress too high transients from the generator?

    If it is capacitors with diodes, they could be used as a voltage doubler/trippler.

    Please attach a picture for more precise advise.

    Kind regards

  371. Etienne Lessard says:

    Hi Mads! 🙂
    First thank for your article it’s very useful!
    I have a question regarding a capacitor that blowup and it seen to not use standard code;

    PPS 800

    The capacitor is from a power supply running on the 240v

  372. Mads Barnkob says:

    Hi Etienne Lessard

    Thank you 🙂

    That is a metallized film capacitor, most likely a MKT or MKP type.

    I guess its 0.1 uF at 800VDC rating, which corresponds to each size.

    Kind regards

  373. Tony says:

    I need a cap for a model engine ignition circuit. 0.8 to 1uF – 400V or greater I am very limited for space. Can you advice what the smallest physical sized cap is available in that range.

  374. Mads Barnkob says:

    Hi Tony

    As it is such a high voltage, the high density capacity technologies as Tantalum is out of the question. If you can do with polarized capacitor use a electrolytic capacitor else use a MKP/Polypropylene capacitor.

    Kind regards

  375. Dev Raut says:

    Thank you

  376. Joe says:

    Hi Mads
    i have MEX/TENTA MKP 0.1uf K X2 275v when testing with multimeter it says 33 nf can i replace it with MEX/GPF 0.1uf X2 275v when test this with multimeter it says 100 nf, i dont know if both r the same or not, thanks.

  377. Mads Barnkob says:

    Hi Joe

    It sounds like your original capacitor is damaged, so changing it to a healthy capacitor with the same specifications from the markings is the correct thing to do.

    Kind regards

  378. Trevor Allen says:

    hello Mads Barkob,

    I am trying to restore an old Monochrome Ferguson 8430 tv. I have found a Blown
    capacitor with a small hole blown in the very top of the case.
    The Capacitor is labelled
    LCR 3300 JY
    I can not find anything like it for a replacement.
    Can you offer me any help please.

  379. Mads Barnkob says:

    Hi Trevor

    Your best bet is to find a identical in the TV set and measure it. To me it looks like a old first generation tantalum capacitor and then I would guess its rated for 3.3uF.

    Since it is already burned, have you tried to smash it open just to be sure its not a inductor? Maybe its a 3300uH inductor.

    JY is a tolerance and voltage code, unfortunately not a standard one and I would only guess for it to be lower than 100 VDC, so if you use a new component at that or greater you should be covered in.

    Kind regards

  380. Trevor Allen says:

    Hi Mads,
    Thank you very much for your help, I shall open it up and see what’s inside, it had not occurred to me that it might be an inductor, I might get it x rayed first.
    On the circuit board of the Ferguson 3840 ( not 8340 ) as I first told you, the Tantalums are all marked on the board with the Polarity but this type are marked with a circle and a short line to the other lead, I suppose this maybe a strange way of marking the neg lead, but as all the Tants are all marked with a (+) it seems a bit strange.
    Unfortunately I do not have a Schematic and I am in the process of trying to draw one.

    Thank you very much for your valued help, I will let you know of my findings.
    Kind Regards

  381. S.R.CHANDRASHEKAR says:

    What is the difference between .1k63 and .1m63 box type capacitor.

  382. Mads Barnkob says:


    They are the same, 0.1uF/63VDC, K is 10% tolerance and M is 20% tolerance.

    Kind regards

  383. beneesh says:

    please help me identify the capacitor its written 68 2kv blue colour ceramic disc

  384. Mads Barnkob says:

    Hi beneesh

    Given the small size and its high voltage rating, that is a ceramic 2000 V 68pF capacitor.

    Kind regards

  385. beneesh says:

    hello sir please suggest anyother replacement capacitor for 68pf 2kv because i cant find one in market only 1kv or 3kv is available which one would be better?

  386. Soenke says:

    Hi, I think I have to replace this one.
    PHS 233J 1000v

    Should be 22nF, right?

    But what is the PHS for?

    Can’t find this one as a spare part. Only other ones with 22nF /1000v
    But I am not sure if the PHS is important.

  387. Antoine abboud bou madi says:

    Hi very good thanks

  388. Mads Barnkob says:

    Always choose one with a higher voltage rating, a lower would get destroyed.
    Kind regards

  389. Mads Barnkob says:

    Hi Soenke

    PHS is just the manufacturers product code, do not worry about that, as long as you get the capacitance, tolerance and voltage correct, according to 233j 1000V, you are fine 🙂

    Kind regards

  390. Devendra patil says:

    I want 22J/400v capacitor. So which is Available in Indian market….

  391. Beneesh says:

    Can I replace a ceramic disc capacitor with and smd multilayer capacitor

  392. mike jason says:

    Thanks, I will share this article!!

  393. AJ says:

    Hi, I was wondering if there is a way to determine the voltage rating of this capacitor as I see no markings anywhere. This is from a busted multimeter.

  394. Mads Barnkob says:

    Hi AJ

    As it sits in the input section of your multimeter, I would look at the maximum DC rating that the meter is designed for and choose a new ceramic 224J capacitor with a voltage rating higher than that, most likely a 1000VDC.

    Kind regards

  395. Joe says:

    Hello Mads,
    I have a dark green radial lead polyester cap labeled 3M472J.
    I know this should be 4700 pf (472) and +-5%(J) and it measures 4690 pf.
    Question is “What is the 3M voltage rating?
    Your table only goes up to 3A for 1000 volt.
    So 3M would be?
    Joe NA7MT

  396. Mads Barnkob says:

    Hi Joe

    It is hard to tell, you have to look up the manufacturers datasheets to see their non-standard naming, which you are unlikely to find.

    Best bet is to compare the distance between legs with a similar 472 capacitor and see if that voltage rating corresponds with the circuit it was sitting in.

    Kind regards

  397. ADB says:

    Good details, i am alway stugling to understand these thing but now i think i will get it right

  398. Prabir Kumar Biswas says:

    Excellent for understanding and may be used as hand book.

  399. Félix chamorro says:

    Bueno seria más si estuviera en español

  400. Jay says:

    Is it ok to use 3.3 nf or 4.7 nf instead of 3.9 nf the circuit was asking for? It’s for a diy distortion pedal. Thanks a lot!

  401. Mads Barnkob says:

    Hi Jay

    By changing the value of a small value capacitor in something like a distortion pedal, then you will get another sound of out it than intended. A lower value will give you a higher frequency distortion/noise/harmonics and a higher capacitance value a lower.

    Kind regards

  402. KT says:

    Hello, I have an inverter that has what I’m guessing are snubber capacitors(?) marked “P631503J SE 65” sitting atop an IGBT mitsubishi cm300dy-12h. I measure 50.2nF which seems to correspond to the 503, and J +-5%

    Any idea what voltage and type? I’m trying to find out a suitable replacement, but not much knowledge on this.

    thank you

  403. Mads Barnkob says:

    Hi KT

    Snubber capacitors usually have a voltage rating higher than the expected voltage transients on the DC bus. Your CM300DY-12H is a 600V device, properly used at 320VDC so a 600V rating on the snubber capacitor seems minimum. You can also go with a 1200V or 2000V capacitor as they are also common. 50 nF seems a little low for a snubber capacitor, but as it is a original and older design, just go with the same value again. Find a MKP type capacitor.

    Kind regards

  404. Marco says:

    am i right?
    0E = 2,5V
    0G = 4V
    0J = 6,3V
    1A = 10V
    1C = 16V
    1D = 20V
    1E = 25V
    1V = 35V
    1G = 40V
    1H = 50V
    1J = 63V
    1K = 80V
    2A = 100V
    2C = 160V
    2K = 180V
    2D = 200V
    2E = 250V
    2F = 315V
    2V = 350V
    2J = 385V
    26 = 400V
    2P = 415V
    2X = 420V
    2W = 450V
    2H = 500V
    2Y = 550V
    2Z = 575V
    2S = 600V
    J2 = 630V

    i was searching for 0E (missing in your table) and found the information at:

  405. Marco says:

    26 = 400V is wrong!
    must be
    2G = 400V according to table above.

  406. Mads Barnkob says:

    Hi Marco

    I updated the tables with some more of the uncommon values, thank you for the hint.

    Kind regards

  407. Marco says:

    We have to thank you Mads.
    You’re great!

    best wishes

  408. Beneesh says:

    Can a radial ceramic disc capacitor replaced with a smd of the same rating ?

  409. Ade says:

    Hi Mads, just wondering if you can help?
    I have a 15mm disk capacitor E 103Z AC250v 46 that is fitted to an on/off switch on a Pioneer stereo receiver. Now although I know from the charts what spec it is, I can’t find any info anywhere as to what the E and 46 stand for. Any ideas ?
    Thank you

  410. Mads Barnkob says:

    Hi Ade

    E could be a manufacturer product model or something similar. 46 could be some kind of manufacturing batch number or week number. Usually dates are written with year and week number, but again, it depends on the manufacturer. If they only want to track production 1 year back, just writing the week number is good enough for them.

    Kind regards

  411. SUMITH says:

    Hi, I wanted 22j 400v capasiter for power supply circuit 230vA/C to 5v D/C convert. Seller gave me 225K 400v one. Are thease equal or not?
    Is 220nf equal for 225k ?

  412. Mads Barnkob says:


    I expect a 22j to be a 22 nF 5% capacitor, a relatively small component, also written as 223. A 225 is a 2.2 uF which at 400V would be a 37.5 mm wide component or more.

    Kind regards

  413. Ted says:

    This is from a fluorescent light ballast can you tell me what the code means?

  414. Mads Barnkob says:

    Hi Ted

    That is a 100 nF 5% tolerance (100nJ5) capacitor rated for 250 VDC (2E)

    Kind regards

  415. Ted says:

    That’s what I thought but wasn’t sure enough to commit to. Here’s one more from my dad’s stash that I can’t find a decoder for. It only says 600M.1 in case it’s too dark to make it out.
    Thanks again,

  416. Mads Barnkob says:

    Hi Ted

    That is also out of any standard. I would guess its 600V and 0.1 uF. M is properly for 20% tolerance.

    Kind regards

  417. Vic says:

    Can you please give me the equivalent or value of the following capacitors.
    CBB31 205J 350V
    CBB 31 305J 350V

  418. Mads Barnkob says:

    Hi Vic

    CBB31 is the manufacturer model.

    205J is 2 uF at 5% tolerance, 350VDC
    305J is 3 uF at 5% tolerance, 350VDC

    Kind regards

  419. Mentbene says:

    Hey mads i have a 682 100v flim capacitor that i can’t get anywhere, i wil like to ask what equivalent flim capacitor can i use for replacement?

    Thanks in advance

  420. Cameron Stanford says:

    I’ve got a good one:


    It’s one of the tiny electrolytic caps

  421. Alexandre Dias says:

    I’ve been repairing CFLs (compact fluorescent lamps) and had to replace the capacitors (failed by short-circuit) between the two tube filaments of each lamp. Here you can see schematics to understand which capacitor I’m talking about: (the tube filaments are usually identified as LMP1 and LMP2).

    The capacitors are long (“vertical” in relation to the PCB holes, not “horizontal”) and flat, the color seems to be dark green/very dark brown/black (not sure… maybe they get darker from heating during use). From my research, it seems they are ‘polyester film’ capacitors.

    The capacitors I replaced in the two CFLs had this identification:

    N1K0 (not sure if the last character is zero or letter O)

    I understand that both capacitors are 3.3nF 5% tolerance (letter J), so I replaced both capacitors with 3.3nF 1.2kV capacitors of the same type and also being used in CFL ballasts with the same function (capacitors between filaments) — the goal was to get working CFL lamps by using only salvaged parts instead of buying new ones.

    My issues are:
    i) Would the lower voltage rating for capacitor 1 replacement be an issue? I ran the lamp for at least 30min-1h and it seems to be working fine (maybe the higher rating is only to better withstand lamp startup transients?). The lamp is a PHILIPS Tornado Esaver 23W.

    ii) What is the voltage rating of capacitor 2? I can’t understand from the inscription, but the lamp also seems to be working fine after capacitor replacement. The lamp is a PHILIPS Genie 18W.


  422. duTch says:

    This site seems civilized friendly and informative….and I know enough to be almost dangerous…but hope you can help me…..

    My question is if there is a pre-determined value (Volts) that a capacitor will charge to ?

    The circumstance;
    I have a no-go garden shredder which was working fine but stopped, so doing forensic analysis.
    It has a Kai Lu cbb60 capacitor (as per accompanying pic., and is 2″ dia. x 98mm long), that pumps up to the stated 45.5µF (using a Amprobe meter), but after reading a couple of ‘how-to discharge…’ , I’m wondering to what voltage I should expect it to ‘charge to’, or is that irrelevant ?

    It ‘pumps up’ to ~3.38V within a few seconds, and loses most of it in about 90 seconds (to ~0.10V then slows down), is this normal or should it hold longer?
    Question for self-help is, can one pre-determine this value…?

    I hope that’s enough information,
    Thanks in advance, duTch

  423. Mads Barnkob says:

    Hi duTch

    That is a motor-run capacitor and those are prone to failure in that application. It it most likely damaged and needs to changed to a new.

    If you want to test its leakage, you can charge it to f.ex. 320VDC (rectified mains) and look at the current consumption once its charged up. But ramp up the voltage slowly with a variac if possible, it might let out some smoke if charged to that high voltage and is defective.

    You could also use a resistor to form a RC time constant, then you can calculate the time for it to charge up and discharge itself. If it is even slightly faster than the calculated time to discharge, it is likely damaged.

    Kind regards

  424. duTch says:

    ** I wrote this the other day and forgot I held off sending it, pending further comment -sorry

    Hiya Mads, Thanks for that…..I kinda understand, though it’s double-dutch to me ˚~˚, and is probably beyond my current (puns convenient but not intended) capabilities…when I was taking the Cap out after another startup attempt, I must’ve shorted the contacts with the screwdriver that I was using to prise the connectors, and it gave a bit of a crack/bang….so I assume it was charged even though was a while between ‘non-startup’ and bang.

    After my earlier post I also realised that the ~3.5V in my earlier test was maybe governed by the battery voltage of the multi-meter that I used to pump it up, though I’d think that’s 9V (?) sooo…um…I’m starting to think the motor may have frazzled itself…there’s nothing else involved that I can see…..

    What is f.ex? I did a search but found nothing so figure it may be ‘forward-extereme’ or something (obviously clutching at straws)….

    I know I probably should leave it to someone who knows better but can’t contain myself….

    Cheers for now, duTch

  425. Niro says:

    bonjour je voudrais remplacer 2 condensateur de 100 nf dans un circuit loudness pour augmenter un peu les basses lequels je devrais choisir merci d’avance

  426. Mads Barnkob says:

    Hi Niro

    For filters in speakers, use MKP type capacitors. Capacitance needed for your cutoff frequency has to be calculated, plenty of speaker filter calculators can be found on other websites.

    Kind regards

  427. hytham says:

    I have a capacitor which is marked 1.70MKP
    This is 470nF film capacitor . I don’t know what is the 1.70 means
    Could you help ?

  428. Mads Barnkob says:

    Hi hytham

    1.70 is the series code of the manufacturer. This capacitor you have is a Arcotronics MKP capacitor and you can decode the values from this table:

    Kind regards

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