2020-04-23

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COLOUR | DIGIT | MULTIPLIER | TOLERANCE |
---|---|---|---|

Black | 0 | 1 | |

Brown | 1 | 10 | 1 |

Red | 2 | 100 | 2 |

Orange | 3 | 1000 | |

Yellow | 4 | 10000 | |

Green | 5 | 100000 | 0.5 |

Blue | 6 | 1000000 | 0.25 |

Violet | 7 | 10000000 | 0.1 |

Grey | 8 | 100000000 | |

White | 9 | 1000000000 | |

Gold | 0.1 | 5 | |

Silver | 0.01 | 10 |

If the resistor has four colour bands then the first two colored bands represent the first two digits of the resistor value. The third color band is the multiplier i.e number of zeroes as per the third colour band digit added. The fourth color band is the tolerance value.

Tolerance is the range of value within which the original resistor value will be. So the exact value of a 100 Ohm resistor with 5% tolerance may be within the range 95 Ohm to 105 Ohm.

A resistor may also have five color bands. This type of resistors are manufactured with tolerance of 2% and 1% and also for other high accuracy resistors. In these five band resistors, the first three bands represent digits, fourth one represents multiplier and the fifth represents tolerance.

2020-04-23

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