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How to Read Resistor Types and Values
Most electronic components are so small that printing the actual values, ratings and
tolerances on the individual component is often impossible. Therefore, codes were invented
and these codes are printed on the components to describe what values they are.
Below I've listed some of the more common codes that you are likely to come across.
1st Digit
Black
Brown
Red
Orange
Yellow
Green
Blue
Violet
Gray
White 0
1
2
3
4
5
6
7
8
9
2nd Digit
Color Digit
Color Digit
Black
Brown
Red
Orange
Yellow
Green
Blue
Violet
Gray
White 0
1
2
3
4
5
6
7
8
9
Multiplier
Color Multiplier
Black
Brown
Red
Orange
Yellow
Green
Blue
Silver
Gold
1
10
100
1,000
10,000
100,000
1,000,000
.01
.1
Tolerance
Color Tolerance
None
Silver
Gold
Red
Brown +/- 20%
+/- 10%
+/- 5%
+/- 2%
+/- 1%
3rd Digit
Color Digit
Black
Brown
Red
Orange
Yellow
Green
Blue
Violet
Gray
White 0
1
2
3
4
5
6
7
8
9
Metalized Film
1% and 2% types
20%, 10%, and 5% types
Carbon Film
Metal Oxide
Carbon Composition
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