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Color Coding

Resistor Color Code

The value of a standard resistor is indicated on the component with four colored rings.

Color Ring 1 Ring 2 Ring 3
black   0 1
brown   1 1 10
red   2 2 100
orange   3 3 1.000
yellow   4 4 10.000
green   5 5 100.000
blue   6 6 1.000.000
violet   7 7 10.000.000
gray   8 8 100.000.000
white   9 9 1.000.000.000

Resistor color coding.

The fourth color ring indicates the tolerance...

  • Gold: 5% tolerance
  • Silver: 10% tolerance

An example...

Resistor with color code. (Enlarge)

Ring 1: yellow  =   4
Ring 2: violet   =     7
Ring 3: red       =    × 100 = 4700 Ω = 4,7 kΩ
Ring 4: gold      = 5% tolerance

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