Resistor Color Code |Tutorial

  Resistor Color Code, Tutorial  

Components and wires are coded with colors to identify their value and function. Resistor Color Coding uses colored bands to quickly identify a resistors resistive value and its percentage of tolerance with the physical size of the resistor indicating its wattage rating. Generally, the resistance value, tolerance, and wattage rating are printed on the body of a resistor as numbers or letters when the resistors body is big enough to read the print, such as large power resistors. But when a resistor is smaller (example: 1/4 watt carbon or film type), the print is too small to read, so the specifications must be shown in another way.

Color	Digit	Multiplier	Tolerance (%)
Black	0	100(1)	-
Brown	1	10 1	1
Red	2	10 2	2
Orange	3	10 3	-
Yellow	4	10 4	-
Green	5	10 5	0.5
Blue	6	10 6	0.25
Violet	7	10 7	0.1
Grey	8	10 8	-
White	9	10 9	-
Gold	-	10-1	5
Silver	-	10-2	10
(none)	-	-	20

The colors brown, red, green, blue, and violet are used as tolerance codes on 5-band resistors only. All 5-band resistors use a colored tolerance band. The blank (20%) “band” is only used with the “4-band” code (3 colored bands + a blank “band”).

 

                                                   Orange-Orange-Black-Brown-Violet Color Code

A resistor colored Orange-Orange-Black-Brown-Violet would be 3.3 kΩ with a tolerance of +/- 0.1%.
Another example for a Carbon 22000 Ohms or 22 Kilo-Ohms also known as 22K at 5% tolerance:
Band 1 = Red, 1st digit
Band 2 = Red, 2nd digit
Band 3 = Orange, 3rd digit, multiply with zeros, in this case 3 zero's
Band 4 = Gold, Tolerance, 5%
Example  for a Precision Metal Film 19200 Ohms or 19.2 KiloOhms also known as 19K2 at 1% tolerance:
Band 1 = Brown, 1st digit
Band 2 = White, 2nd digit
Band 3 = Red, 3rd digit
Band 4 = Red, 4th digit, multiply with zeros, in this case 2 zero's
Band 5 = Brown, Tolerance, 1%
Band 6 = Blue, Temperature Coefficient, 6

Link to check Restance color Code 
1. Download Resistance color code Software

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