Select the color codes from the bands on the resistor. Hold the resistor with the gold or silver band to the right and read the color codes from the left to the right. Reading and Determining the Resistor Value. So according to the formula the resistance will be: 103 * 100 = 10300 Ohms with 5% tolerance and 100 ppm/K temperature coefficient value. A 6-band resistor is like a 5-band but includes a temperature coefficient band. Let’s take an example of a 6-band resistor with the colors given in the above image (brown, black, orange, red, gold and brown). The blue-bodied resistors and the dark brown resistor contain metal-oxide film elements, while the beige-bodied resistors and the green resistor contain carbon film.

‘ f’ represents the 6 th significant digit, which is the sixth band color of resistor and this is the temperature coefficient value of resistor. The beige-colored body of a resistor is often an indication that its tolerance is 5, while a blue-colored body often indicates a tolerance of 1 or 2. ‘ e’ represents the 5 th significant digit, which is the fifth band color of resistor and this is the tolerance value of resistor. ‘ d’ represents the 4 th significant digit, which is the fourth band color of resistor and this is the multiplier value used in formula. ‘ c’ represents the 3 rd significant digit, which is the third band color of resistor. ‘ b’ represents the 2 nd significant digit, which is the second band color of resistor.

‘ a’ represents the 1 st significant digit, which is the first band color of resistor. The color code table for six band resistors is shown below. Just have a look to the resistor color code chart below and see the calculations, how the resistance value is calculated according to this chart.Ĭalculating resistance for a 6-band resistor To calculate the resistance of a resistor, you can select the appropriate color bands in the above resistor color code calculator. A resistor is identified by its pattern of color of bands.

Blue resistor color code