# Resistor Color Codes

The color code is not only for resistors, but capacitors and inductors. This convenient index was created by Radio Manufactures Association (now part of Electronic Industries Alliance) in early 1920s. The trarences of resistors in the 4th or 5th bands are sometimes distinguished by spacing or width of the band. This page shows how to read the 4th-, 5th-, and 6th-band resistor color codes, and the related information on resistors.
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Example: (four bands)

Yellow and green represent 4 and 5, respectively. Those consist of the first and second digits, so it will be 45. The third band is orange. As a multiplier, it is × 1000, so you will calculate 45 × 1000; therefore, the resistance is 45,000 Ω. The forth band, silver, represents the tolerance, so the final expression of the resistance is

Example: (five bands)

Yellow, white and yellow represent 4, 9 and 4, respectively. Those consist of the first, second and third digits, so it will be 494. The forth band is brown. As a multiplier, it is × 10, so you will calculate 494 × 10; therefore, the resistance is 4,940 Ω. The fifth band, gold, represents the tolerance, so the final expression of the resistance is

Example: (six bands)

Violet, grey and green represent 7, 8 and 5, respectively. Those consist of the first, second and third digits, so it will be 785. The forth band is red. As a multiplier, it is × 100, so you will calculate 785 × 100; therefore, the resistance is 78,500 Ω. The fifth band, silver, represents the tolerance, 10%. The sixth band is the temperature coefficient of the resistor. Brown represents 100ppm/K. Namely, the final expression of the resistance is

Each color corresponds to a certain number:

There are several mnemonics for this. Some of statements might not be politically correct.

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__Contents__## Four-band resistor color codes

(PDF file for 4-band color codes)**Yellow, Green, Orange, Silver**Yellow and green represent 4 and 5, respectively. Those consist of the first and second digits, so it will be 45. The third band is orange. As a multiplier, it is × 1000, so you will calculate 45 × 1000; therefore, the resistance is 45,000 Ω. The forth band, silver, represents the tolerance, so the final expression of the resistance is

__45,000 ± 10% Ω__.## Five-band resistor color codes

(PDF file for 5-band color codes)**Yellow, White, Yellow, Brown, Gold**Yellow, white and yellow represent 4, 9 and 4, respectively. Those consist of the first, second and third digits, so it will be 494. The forth band is brown. As a multiplier, it is × 10, so you will calculate 494 × 10; therefore, the resistance is 4,940 Ω. The fifth band, gold, represents the tolerance, so the final expression of the resistance is

__4,940 ± 5% Ω__.## Six-band resistor color codes

(PDF file for 6-band color codes)**Violet, Grey, Green, Red, Silver, Brown**Violet, grey and green represent 7, 8 and 5, respectively. Those consist of the first, second and third digits, so it will be 785. The forth band is red. As a multiplier, it is × 100, so you will calculate 785 × 100; therefore, the resistance is 78,500 Ω. The fifth band, silver, represents the tolerance, 10%. The sixth band is the temperature coefficient of the resistor. Brown represents 100ppm/K. Namely, the final expression of the resistance is

__78,500 ± 10% Ω with Temp. Coeff. 100 ppm/K__.**Mnemonics**Each color corresponds to a certain number:

Black | Brown | Red | Orange | Yellow | Green | Blue | Violet | Grey | White |

0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |

**B**etter

**B**e

**R**ight

**O**r

**Y**our

**G**reat

**B**ig

**V**enture

**G**oes

**W**est

**B**ad

**B**eer

**R**ots

**O**ur

**Y**oung

**G**uts,

**B**ut

**V**odka

**G**oes

**W**ell

**B**lack

**B**ears

**R**un

**O**ver

**Y**ellow

**G**rass,

**B**ut

**V**ultures

**G**lide over

**W**ater

**B**ig

**B**ears

**R**un

**O**ver

**Y**our

**G**ladiola

**B**ed

**V**exing

**G**liarden

**W**orms

**B**lack

**B**ugs

**R**ace

**O**ver

**Y**ellow

**G**rass,

**B**eside

**V**iolent

**G**rey

**W**ater

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