Inductor Color Code

Molded & Coated Inductor Color Coding

Cylindrical molded choke coils are marked with five colored bands. A wide silver band, located at one end of the coil, identifies military radio-fequency coils. The next three bands indicate the inductance in micro-henries and the fourth band is the tolerance.

Color coding is in accordance with the color code table shown right.  If the first or second band is gold, this represents the decimal point for inductance values less than ten.  Then the following two bands significant figures.  For inductance values of 10 or more, the first two bands represent significant figures and the third is the multiplier.