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Color codes for fixed resistors - values and tolerances - online calculator

electrical resistor color codes

Color codes for fixed resistors:

Color Significant
Figures Multiplier Tolerance
Silver 10-2 +- 10%
Gold 10-1 +- 5%
Black 0 1
Brown 1 10 +- 1%
Red 2 102 +- 2%
Orange 3 103
Yellow 4 104
Green 5 105 +- 0.5%
Blue 6 106 +- 0.25%
Violet 7 107 +- 0.1%
Grey 8 color 108
White 9 109
None +- 20%

Four Band Fixed Resistor

Two first bands (first band is the sponsored: Color Code Your Notes & one nearest the end of the resistor) indicates the value, the third indicates the multiplier and the fourth indicates tolerance. 

Example - Value Four Band Fixed Resistor 

A resistor with the four color bands

yellow - violet - orange - red

    4   -    7    -  103   -   +-2%

has a value of 47 kΩ with tolerance +- 2%.

Four Band Resistor Calculator

Four Band Resistor
Band 1 Band 2 Multiplier Tolerance
None Brown Red Orange Yellow Green Blue Violet Gray White None Black Brown Red Orange Yellow Green Blue Violet Gray White None Black Brown Red Orange Yellow Green Blue Gold Silver None Brown Red Gold Silver

Five Band Fixed Resistor

Three first bands (first band is the one nearest the end of the resistor) indicates the value, the fourth indicates the multiplier and the fifth indicates tolerance. 

Example - Value Five Band Fixed Resistor 

A resistor with the five color bands

red - yellow - white - orange - brown

 2   -    4     -   9    -  103   -    +-1%   

has a value of 249 kΩ with tolerance +- 1%.

Five Band Resistor Calculator

Five Band Resistor
Band 1 Band 2 Band 3 Multiplier Tolerance
None Brown Red Orange Yellow Green Blue Violet Gray White None Black Brown Red Orange Yellow Green Blue Violet Gray White None Black Brown Red Orange Yellow Green Blue Violet Gray White None Black Brown Red Orange Yellow Green Blue Gold Silver None Brown Red Gold Silver

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Источник: http://www.engineeringtoolbox.com/electrical-resistor-colour-code-value-tolerance-d_1655.html


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