Monday, April 20, 2015

Capacitor Code Table


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 numberMultiply withLetterTolerance
01D0.5pF
110F1%
2100G2%
31,000H3%
410,000J5%
5100,000K10%
61,000,000M20%
7Not usedM20%
80.01P+100%/-0%
90.1Z+80%/-20%
 Table 2 – Electronic Industries Alliance (EIA) – voltage code table
0G = 4.0VDC0L = 5.5VDC0J = 6.3VDC
1A = 10VDC1C = 16VDC1E = 25VDC
1H = 50VDC1J = 63VDC1K = 80VDC
2A = 100VDC2Q = 110VDC2B = 125VDC
2C = 160VDC2Z = 180VDC2D = 200VDC
2P = 220VDC2E = 250VDC2F = 315VDC
2V = 350VDC2G = 400VDC2W = 450VDC
2H = 500VDC2J = 630VDC3A = 1000VDC
Here is a list of common capacitors and a scale between the different grades of the Farad SI unit.

Table 3
pico-farad
(pF)
nano-farad
(nF)
mikro-farad
(mF,uF eller mfd)
Capacitor code
10.0010.000001010
1.50.00150.00000151R5
2.20.00220.00000222R2
3.30.00330.00000333R3
3.90.00390.00000393R9
4.70.00470.00000474R7
5.60.00560.00000565R6
6.80.00680.00000686R8
8.20.00820.00000828R2
100.010.00001100
150.0150.000015150
220.0220.000022220
330.0330.000033330
470.0470.000047470
560.0560.000056560
680.0680.000068680
820.0820.000082820
pFnFuFCode
1000.10.0001101
1200.120.00012121
1300.130.00013131
1500.150.00015151
1800.180.00018181
2200.220.00022221
3300.330.00033331
4700.470.00047471
5600.560.00056561
6800.680.00068681
7500.750.00075751
8200.820.00082821
10001 or 1n0.001102
15001.5 or 1n50.0015152
20002 or 2n0.002202
22002.2 or 2n20.0022222
33003.3 or 3n30.0033332
47004.7 or 4n40.0047472
50005 or 5n0.005502
56005.6 or 5n60.0056562
68006.8 or 6n80.0068682
1000010 or 10n0.01103
1500015 or 15n0.015153
2200022 or 22n0.022223
3300033 or 33n0.033333
4700047 or 47n0.047473
6800068 or 68n0.068683
pFnFuFCode
100000100 or 100n0.1104
150000150 or 150n0.15154
200000200 or 200n0.20204
220000220 or 220n0.22224
330000330 or 330n0.33334
470000470 or 470n0.47474
6800006800.68684
100000010001.0105
150000015001.5155
200000020002.0205
220000022002.2225
100000001000010106

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