W2EGB
Technical Information

Resistor Color Codes

graphic of a modern resistor
Color Number Multiplier Tolerance % Failure Rate
Black 0 1 +/-20 -
Brown 1 10 +/-1 1.0
Red 2 100 +/-2 0.1
Orange 3 1,000 +/-3 0.01
Yellow 4 10,000 +/-4 0.001
Green 5 100,000 - -
Blue 6 1,000,000 - -
Violet 7 10,000,000 - -
Gray 8 100,000,000 - -
White 9   - Solderable
Gold - 0.1 +/-5 -
Silver - 0.01 +/-10 -
No Color -   +/-20 -

NOTE: On some five-band resistors, the third band is a third digit, the fourth band is the multiplier, and the fifth band is the tolerance.

NOTE: Some "five-band" resistors have a sixth band, which indicates temperature coefficient:

as

Inductors & Capacitors

Color codes also exist for inductors and capacitors. There is a four-band inductor color code that is about the same as the four-band resistor code, 1st digit, 2nd digit, multiplier, and tolerance, expressed in micro-Henries. There is also a three- to six-band capacitor code, with various configurations that — usually after the multiplier — could include tolerance, working voltage, and temperature coefficient (most of the capacitors that used these codes are now obsolete).

 

By the way, that's a 6200 ohm resistor, +/- 5% tolerance, 0.1% failure rate.

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Created:18 July 2005
Revised:22 August 2015
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