Question
Tue May 03, 2011 By:
 

Please send me the color coding of resistors with their values.

Expert Reply
Mon May 02, 2011
Band Color
Options
Band #1
Possible
Band #2
Possible
Band #3
Possible
Multiplier Value
For Band 3
Band #4
Value Tolerance
Black 011 
Brown11110 
Red222100 
Orange3331,000 
Yellow44410,000 
Green555100,000 
Blue6661,000,000 
Violet77 10,000,000 
Gray88 100,000,000 
White99 1,000,000,000 
None    20%
Silver    10%
Gold    5%
Version Brown.Brown.Brown
 
 
 Each color band represents a number and the order of the color band will represent a number value. The first 2 color bands indicate a number. The 3rd color band indicates the multiplier or in other words the number of zeros. The fourth band indicates the tolerance of the resistor +/- 20%, 10% or 5%. In most cases, there are 4 color bands. However, certain precision resistors have 5 bands or have the values written on them, refining the tolerance value even more. There is no standard (tans) however, for the 5th band. From one manufacturing company to another, the 5th band may indicate 2%, 1%, 1/2% or even closer, according to their own standards. Color bands are usually found on resistors that have a wattage value of 1/8 to 2 watts; though it is rare, there are some 5 watt resistors that are banded. There are also some capacitors that are color coded. See our capacitor colour code calculations.
The standard colour code cannot show values of less than 10. To show these small values two special colours are used for the third band:gold which means × 0.1 and silver which means × 0.01. The first and second bands represent the digits as normal.

For example:red,violet and gold bands represent 27 × 0.1 = 2.7 

 green,blue, silver bands represent 56 × 0.01 = 0.56 

HFOhmColorSignificant
figures
MultiplierToleranceTemp. Coefficient (ppm/K)
10µ's 10p's 10's Black 0 ×100 – 250 U
100µ's 100p's 100's Brown 1 ×101 ±1% F 100 S
1m's 1n's 1k's Red 2 ×102 ±2% G 50 R
10m's 10n's 10k's Orange 3 ×103 – 15 P
100m's 100n's 100k's Yellow 4 ×104 – 25 Q
1's 1µ's 1M's Green 5 ×105 ±0.5% D 20 Z
10's 10µ's 10M's Blue 6 ×106 ±0.25% C 10 Z
100's 100µ's 100M's Violet 7 ×107 ±0.1% B 5 M
1k's 1m's 1G's Gray 8 ×108 ±0.05% A 1 K
10k's 10m's 10G's White 9 ×109 – –
1µ's 1p's 1's Gold – ×10-1 ±5% J –
1/10µ's 1/10p's 1/10's Silver – ×10-2 ±10% K –
- - - None – – ±20% M –
 
 
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