Reading Axial Resistor Values
Axial resistors, the kind that is most often used when prototyping, have color coded bands that specify the resistance value and tolerance of the resistor. They usually come in 4 or 5 band flavors, with 5 band resistors being more precise.
To read a banded resistor, align it so that the three (or four) closely spaced bands are on the left, and the furthest spaced band is on the right. Then, use the following chart to determine the values from left to right:
The first 2 (or 3 bands, on a 5-band resistor) specify the resistance value, and the 3rd (or 4th) specify the magnitude multiplier.
For example, the resistor shown above has the following values:
- Brown =
- Blue =
- Black =
- Orange =
- Gold =
Therefore, the resistor has
160Ω * 1k = 160kΩ, with a tolerance of