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Resistor color codes and e-series.

Contents


Resistor color codes.

This table shows the standard color codes:
Color: Guess what.
Code: IEC60757 standardized abbreviation for the color.
Value: Numerical value.
Multiplier: Multiplier value.
Tolerance: Tolerance value. The letter in () is the standard letter abbreviation for the tolerance. This is brown for a 1% resistor.
Temperature coefficient: Temperature coefficient value. The letter in () is the standard letter abbreviation for the tolerance. This will typically be red for a 1% resistor.

Table 2: Resistor color codes.
ColorCodeValueMultiplierToleranceTemperature coefficient
BlackBK01 (=100)250ppm/K (U)
BrownBN110 (=101)1% (F)100ppm/K (S)
RedRD2100 (=102)2% (G)50ppm/K (R)
OrangeOG31000 (=103)15ppm/K (P)
YellowYE410000 (=104)25ppm/K (Q)
GreenGN5100000 (=105)0.5% (D)20ppm/K (Z)
BlueBU61000000 (=106)0.25% (C)10ppm/K (Z)
VioletVT710000000 (=107)0.1% (B)5ppm/K (M)
GrayGY8100000000 (=108)0.05% (A)1ppm/K (K)
WhiteWH91000000000 (=109)
GoldGD0.1 (=10-1)5% (J)
SilverSR0.01 (=10-2)10% (K)
None20% (M)

Resistor E series.

Table 3: E3, E6, E12 and E24 values.
E3E6E12E24E3E6E12E24E3E6E12E24E3E6E12E24
1010101018183333335656
11203662
1212222222223939686868
13244375
1515152727474747478282
16305191

Table 4: E48, E96 and E192 values.
E48E96E192E48E96E192E48E96E192E48E96E192E48E96E192E48E96E192E48E96E192E48E96E192
10.010.010.013.313.313.317.817.817.823.723.723.731.631.631.642.242.242.256.256.256.275.075.075.0
10.113.518.024.032.042.756.975.9
10.210.213.713.718.218.224.324.332.432.443.243.257.657.676.876.8
10.413.818.424.632.843.758.377.7
10.510.510.514.014.014.018.718.718.724.924.924.933.233.233.244.244.244.259.059.059.078.778.778.7
10.614.218.925.233.644.859.779.6
10.710.714.314.319.119.125.525.534.034.045.345.360.460.480.680.6
10.914.519.325.834.445.961.281.6
11.011.011.014.714.714.719.619.619.626.126.126.134.834.834.846.446.446.461.961.961.982.582.582.5
11.114.919.826.435.247.062.683.5
11.311.315.015.020.020.026.726.735.735.747.547.563.463.484.584.5
11.415.220.327.136.148.164.285.6
11.511.511.515.415.415.420.520.520.527.427.427.436.536.536.548.748.748.764.964.964.986.686.686.6
11.715.620.827.737.049.365.787.6
11.811.815.815.821.021.028.028.037.437.449.949.966.566.588.788.7
12.016.021.328.437.950.567.389.8
12.112.112.116.216.216.221.521.521.528.728.728.738.338.338.351.151.151.168.168.168.190.990.990.9
12.316.421.829.138.851.769.092.0
12.412.416.516.522.122.129.429.439.239.252.352.369.869.893.193.1
12.616.722.329.839.753.070.694.2
12.712.712.716.916.916.922.622.622.630.130.130.140.240.240.253.653.653.671.571.571.595.395.395.3
12.917.222.930.540.754.272.396.5
13.013.017.417.423.223.230.930.941.241.254.954.973.273.297.697.6
13.217.623.431.241.755.674.198.8

The values for the E48..E192 series can be calculated:
Value = 10 ^ ( n / e ), where:
n is the number in the series.
e is the series (48, 96 or 192).

You can download a spread-sheet with the values here.


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