✔ Resistors Colours

Resistors Colours

- May 21, 2019

The four band color code is the most common variation. More online conversion calculators at digi key.

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Color bands are used because they can be easily and cheaply printed on a small electronic component.

Resistors colours. And the last color. What is a zero ohm resistor. Single black band or zero ohm resistor.

Resistor color coding color coding is a method used to indicate the resistive value tolerance and temperature coefficient of resistors with low wattage rating because of their small size. An electronic color code is used to indicate the values or ratings of electronic components usually for resistors but also for capacitors inductors diodes and others. The blank 20 band is only used with the 4 band code 3 colored bands a blank band.

An international and universally accepted resistor colour code scheme was developed many years ago as a simple and quick way of identifying a resistors ohmic value no matter what its size or condition. Easily recognized by their single black band zero ohm resistors are basically wire links used to connect traces on a printed circuit board. These resistors have two bands for the resistance value one multiplier and one tolerance band.

All 5 band resistors use a colored tolerance band. A separate code the 25 pair color code is used to identify wires in some telecommunications cables. Gold and silver are replaced with yellow and grey in high voltage resistors to prevent having metal particles in the exterior coating.

In the example on the left these bands are green blue red and gold. How to read color codes from resistors. Axial resistors cases are usually tan brown blue or green though other colors are occasionally found as well such as dark red or dark gray and display 3 6 colored stripes that indicate resistance and by extension tolerance and may be extended to indicate the temperature coefficient and reliability class.

From right to left the second color is multiplier. The colors brown red green blue and violet are used as tolerance codes on 5 band resistors only. These coloured painted bands produce a system of identification generally known as a resistors colour code.

In order to prevent metal and other particles from getting in the coating of high voltage resistors the gold and silver bands are often replaced with a yellow and gray band. But this is not for all colors. By using the color code chart one finds that green stands for 5 and blue for 6.

The resistor color code calculator decodes and identifies a value and tolerance of 4 band wire wound resistors.