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Electronics Capacitor Value Reference

Part of the Electronics For Dummies Cheat Sheet

In electronic circuits, the value of capacitors can be determined by a two- or three-digit code that appears on the casing. The following table outlines values for some common capacitors. Note that two-digit values are in pico-farads and three-digit values are in microfarads.

Marking Value
nn (a number from 01 to 99) nn picofarads (pF)
101 100 pF
102 0.001 µF
103 0.01 µF
104 0.1 µF
221 220 pF
222 0.0022 µF
223 0.022 µF
224 0.22 µF
331 330 pF
332 0.0033 µF
333 0.033 µF
334 0.33 µF
471 470 pF
472 0.0047 µF
473 0.047 µF
474 0.47 µF
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