Resistor Flash Cards

Color codes, SMD markings, formulas, and quick calculations. Click a card to flip it, then mark whether you got it.

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Color code cheat sheet

Read with the tolerance band (gold, silver, or the band spaced farthest from the others) on the right. 4-band: digit, digit, multiplier, tolerance. 5-band: digit, digit, digit, multiplier, tolerance. 6-band adds a temperature coefficient band.