Resistor Color Code

High quality metal film resistors are often marked by six colored rings giving the value, the tolerance and the temperature coefficient of the component. The coding scheme is similar to that of resistors with four and five rings.

	mantissa					exponent			tolerance			temp.coeff.
	0 1 2 3 4 5 6 7 8 9	0 1 2 3 4 5 6 7 8 9	0 1 2 3 4 5 6 7 8 9			x 1 x 10 x 100 x 1k x 10k x 100k x 1M x 10M x 0.01 x 0.1 x 0.1 x 0.01			±20% ±1% ±2% ±3% 0...+100% ±0.5% ±0.25% ±0.1% ±5% ±10%			±200ppm/K ±100ppm/K ±50ppm/K ±15ppm/K ±25ppm/K ±10ppm/K ±5ppm/K ±1ppm/K
	black brown red orange yellow green blue violet gray white	black brown red orange yellow green blue violet gray white	black brown red orange yellow green blue violet gray white			black brown red orange yellow green blue violet gray white gold silver			black brown red orange yellow green blue violet gold silver			black brown red orange yellow blue violet gray
(above table requires JavaScript)

color			mantissa			exponent	tolerance	temp.coeff.
	black		0	0	0	x 1	±20%	±200ppm/K
	brown		1	1	1	x 10	±1%	±100ppm/K
	red		2	2	2	x 100	±2%	±50ppm/K
	orange		3	3	3	x 1k	±3%	±15ppm/K
	yellow		4	4	4	x 10k	0...+100%	±25ppm/K
	green		5	5	5	x 100k	±0.5%	-
	blue		6	6	6	x 1M	±0.25%	±10ppm/K
	violet		7	7	7	x 10M	±0.1%	±5ppm/K
	gray		8	8	8	x 0.01	-	±1ppm/K
	white		9	9	9	x 0.1	-	-
	gold		-	-	-	x 0.1	±5%	-
	silver		-	-	-	x 0.01	±10%	-

Responsible for these pages: U. Zimmermann