Capacitor Code Bench

Capacitor Code Bench

Read the marking on a capacitor, work out its value, then check it on the LCR meter.

Pick a capacitor
1

What value does the marking show?

2

Discharge it before testing

Stored charge
70 %
3

Test on the LCR meter at 1 kHz

LCR-Q METER1 kHz
Cs
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Code chart

3-digit codeFirst two digits = number. Third digit = how many zeros. Answer is in pF.
104 = 10 + 0000 = 100 000 pF
Changing units1000 pF = 1 nF
1000 nF = 1 µF
100 000 pF = 100 nF = 0.1 µF
Tolerance letterJ = ±5 %
K = ±10 %
M = ±20 %
Electrolytics show µF and voltage directly.

Marked vs measured

CapacitorTypeMarkingMarked valueLCR meterStatus