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Resistor References

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To see a list of our other reference materials click here or one of the buttons in the left hand column. 

 

Resistor Color Codes

COLOR 1st & 2nd Bands 3rd Band 4th Band
Black 0 1  
Brown 1 10 +/- 1%
Red 2 100 +/- 2%
Orange 3 1,000 +/- 3%
Yellow 4 10,000 +/- 4%
Green 5 100,000  
Blue 6 1,000,000  
Violet 7 10,000,000  
Gray 8 100,000,000  
White 9    
Gold   0.1 +/- 5%
Silver   0.01 +/- 10%
No color     +/- 20%

Resistor value in ohms = (10 * (1st band)  + (2nd band)) * (3rd band)

Example

Red, red, orange, silver = (10 * 2 + 2) * 1000 = 22,000 ohms, +/- 10%

 

 

 

Standard Resistance Values

1.0 1.1 1.2 1.3 1.5 1.6
1.8 2.0 2.2 2.4 2.7 3.0
3.3 3.6 3.9 4.3 4.7 5.1
5.6 6.2 6.8 7.5 8.2 9.1

 

 

Resistor reference data

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