ECE 291 Lab. APPENDIX A: Resistor Color Code

APPENDIX A

RESISTOR COLOR CODE

R_(Value) = (1st Band) 2nd Band) x 10(3rd Band)

BAND 4 SPECIFIES RESISTOR TOLERANCE

RED 2% GOLD 5% SILVER 10% NONE 20%

EXAMPLE:

RED RED YELLOW SILVER

2 2 4* 10%

R = 220000W, Or 220 kW, 10%
*Remember this is the multiplier, in other words the amount of zeros

COLOR	1ST Band	2nd Band	3rd Band	Multiplier	Tolerance
Black	0	0	0	1W
Brown	1	1	1	10W	± 2%
Red	2	2	2	100W	± 1%
Orange	3	3	3	1KW
Yellow	4	4	4	10KW
Green	5	5	5	100KW	± 0.5%
Blue	6	6	6	1MW	± 0.25%
Violet	7	7	7	10MW	± 0.10%
Gray	8	8	8	1W	± 0.05%
White	9	9	9	1W
Gold				0.1	± 5%
Silver				0.01	± 10%

GRAPHICAL RESISTANCE CALCULATOR

in JAVASCRIPT

Version 2.0

by Danny Goodman (dannyg@dannyg.com)

Analyzed and described at length in

"JavaScript Bible"

(Wiley.com ISBN 0-7645-4718-6)

RESISTOR COLOR CODE

CALCULATOR