The first three bands are the significant digits of resistance. Also, the 4-Band Resistors have tolerances below 20%.ĥ-Band Resistors: These resistors have a total of five color bands. The first two color bands represent the resistance, the third represents the multiplier, and the fourth is the tolerance. In addition, the resistance value for this resistor will fall between 1.2 ohms and 0.8 ohms.Ĥ-Band Resistors: These resistors have three color bands located on the left side of the resistor and one on the right. How to Identify Resistor Color Code?ģ-Band Resistors: Designers use these resistors when there is a need for a low resistance value.įor example, a 1Ω resistor with three bands will have colors brown, black, and gold. Thus, the specifications are shown using resistor color codes. However, the print is unclear if the resistor is very small, for example, in a ¼ watt carbon.

It is the case with large power resistors. Generally, designers print the tolerance, resistance value, and wattage rating on the resistor’s body as letters or numbers if the resistor is big enough. The resistor’s physical value indicates the wattage rating. Resistor code colors are colored marks printed on resistors to display the electrical resistance and tolerance values. This article will help you learn more about resistor color codes and how to identify them. Therefore, It’s important to know the resistor’s value before incorporating it into an electronic component, such as the SAMD21. These colors represent the total value of the resistor.

Besides, with a closer look at it, you will notice various resistor color codes. So according to the formula the resistance will be: 152 * 1 = 152 Ohms with 5% tolerance.To begin, resistors are common devices in electronic components and circuits. Let’s take an example of a 5-band resistor with the colors given in the above image (brown, green, red, black and gold). ‘ 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. 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 5-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.

Resistor color code