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Resistors Color Codes Learn in Easy way in Electronics

November 24, 2018

 Resistors Color Codes Learn in Easy way Electronics


Resistors Color Codes
Resistors Color Codes
Carbon-composition and carbon film resistors are too small to have the resistance value printed on it. Therefore, bands of color are used to represent the resistance value. Components and Wires are coded with colors to identify their value and function. Components and Wires are coded with colors to identify their value and function. That is why we have to calculate the value of resistance manually for that we have to adopt some procedure and one that procedure is given in that article is Resistors color Codes.
The first and second band represent the numerical value of the resistor, and the color of the third band specify the power-of-ten multiplier. The color bands are always read from left to right starting with the side that has a band closer to the edge.  For carbon-composition and carbon film resistors, the common tolerances are 5%, 10%, and 20%, indicating that the actual value of the resistor can vary from the nominal value by ±5%, ±10% and ±20%. If the band is gold, it specifies a 5% tolerance; silver specifies a 10% tolerance; if no band is present, the tolerance is 20%.Note that the color-code system for capacitors is very similar to that of resistors except there is a fifth band representing the temperature coefficient. This band is the first one closest to one end of the capacitor. The other four fall into the same order as mentioned for resistors. In this case, the second, third, and fourth bands are used to determine the capacitance. The fifth band represents the tolerance of the capacitor. The table below shows the color code and their associated value:
Note that the color-code system for capacitors is very similar to that of resistors except there is a fifth band representing the temperature coefficient. This band is the first one closest to one end of the capacitor. The other four fall into the same order as mentioned for resistors. In this case, the second, third, and fourth bands are used to determine the capacitance. The fifth band represents the tolerance of the capacitor.

The table below shows the color code and their associated value:



Color
First-band
Digit
Second-band
Digit
Third-band
Multiplier
Fourth-band
Tolerance
Black
0
0
100 = 1

Brown
1
1
101 = 10
1%
Red
2
2
102 = 100
2%
Orange
3
3
103 = 1000
3%
Yellow
4
4
104 = 10000
4%
Green
5
5
105 = 100000

Blue
6
6
106 = 1000000

Violet
7
7
107 = 10000000

Gray
8
8
108 = 100000000

White
9
9
109 = 1000000000

Gold



5%
Silver



10%
None



20%

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