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Capacitor Codes |
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How to read capacitor values from their colour or numeric codes
It would be nice if there was more consistency to capacitor markings. If the manufacturer has lots of room (like on big electrolytics) they will usually print everything they can; value, voltage rating, temperature rating, series, even country of manufacture. However, the smaller the part gets, the less information you get until, on the smallest parts there may be nothing at all. On small through-hole ceramics, a two-number-plus-exponent
system is often (but not always) used. This, like most marking systems, is based on the pico-farad, the lowest common denominator of capacitance. 470 may be 47 (47 x 100) or 470 pF but 471 is almost certainly 470 (47 x 101). 473 will probably be 0.0047. However, 479 will probably mean 4.7 (47 x 10 -1). Values below 10 pF may use "R" for a decimal point, 4R7 = 4.7 pF for example. With luck, you might also find the material (C0G, X7R, etc.) and voltage rating. The tolerance may be next to the
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Ceramic capacitor codes using numeric coding
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Multiplier Table |
Tolerance Table |
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| Number |
Multiply By ..
(Additional no. of Zeros) |
| 0 |
None (0) |
| 1 |
10 (1) |
| 2 |
100 (2) |
| 3 |
1,000 (3) |
| 4 |
10,000 (4) |
| 5 |
100,000 (5) |
| 6 |
1,000,000 (6) |
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| Code |
Tolerance |
| C |
±0.25pF |
| J |
±5% |
| K |
±10% |
| M |
±20% |
| D |
±0.5pF |
| Z |
+80% / -20% |
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6-DOT RMA-JAN-AWS Standard Capacitor Color Code
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COLOR |
TYPE |
1st
DIGIT |
2nd
DIGIT |
MULTIPLIER |
TOLERANCE
(percent) |
CHARACTERISTIC
or CLASS |
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Black |
JAN Mica |
0 |
0 |
1 |
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Brown |
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1 |
1 |
10 |
1 |
Applies to |
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Red |
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2 |
2 |
100 |
2 |
temperature |
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Orange |
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3 |
3 |
1000 |
3 |
coefficients or |
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Yellow |
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4 |
4 |
10000 |
4 |
methods of testing |
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Green |
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5 |
5 |
100000 |
5 |
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Blue |
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6 |
6 |
1000000 |
6 |
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Purple |
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7 |
7 |
10000000 |
7 |
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Gray |
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8 |
8 |
100000000 |
8 |
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White |
RMA mica |
9 |
9 |
1000000000 |
9 |
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Gold |
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.1 |
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Silver |
AWS paper |
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.01 |
10 |
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Body |
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20 |
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5-Color Capacitor Color Code
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COLOR |
1st
DIGIT |
2nd
DIGIT |
MULTIPLIER |
TOLERANCE
(percent) |
VOLTAGE |
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Black |
0 |
0 |
1 |
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Brown |
1 |
1 |
10 |
1 |
100 |
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Red |
2 |
2 |
100 |
2 |
200 |
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Orange |
3 |
3 |
1000 |
3 |
300 |
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Yellow |
4 |
4 |
10000 |
4 |
400 |
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Green |
5 |
5 |
100000 |
5 |
500 |
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Blue |
6 |
6 |
1000000 |
6 |
600 |
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Purple |
7 |
7 |
10000000 |
7 |
700 |
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Gray |
8 |
8 |
100000000 |
8 |
800 |
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White |
9 |
9 |
1000000000 |
9 |
900 |
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Gold |
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.1 |
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1000 |
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Silver |
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.01 |
10 |
2000 |
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Body |
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20 |
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Ceramic Capacitor Color Code |
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COLOR |
1st
DIGIT |
2nd
DIGIT |
MULTIPLIER |
TOLERANCE
over 10pf |
TOLERANCE
under 10 pf |
TEMPERATURE |
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Black |
0 |
0 |
1 |
± 20% |
2.0 pf |
0 |
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Brown |
1 |
1 |
10 |
± 1% |
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-30 |
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Red |
2 |
2 |
100 |
± 2% |
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-80 |
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Orange |
3 |
3 |
1000 |
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-150 |
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Yellow |
4 |
4 |
10000 |
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-220 |
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Green |
5 |
5 |
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± 5% |
0.5 pf |
-330 |
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Blue |
6 |
6 |
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-470 |
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Purple |
7 |
7 |
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-750 |
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Gray |
8 |
8 |
.01 |
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0.25 pf |
+30 |
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White |
9 |
9 |
.1 |
± 10% |
1.0 pf |
+500 to -330 |
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Gold |
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+100 |
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How to
make a computer controlled train set |
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© Copyright pc-control.co.uk 2005 |
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