Resistor tolerance is a measure of the resistors variation from the specified resistive value and is a consequence of the manufacturing process and is expressed as a percentage of its “nominal” or preferred value. The fourth and fifth bands are used to determine the percentage tolerance of the resistor.
The “left-hand” or the most significant coloured band is the band which is nearest to a connecting lead with the colour coded bands being read from left-to-right as follows:ĭigit, Digit, Multiplier = Colour, Colour x 10 colour in Ohm’s (Ω’s)įor example, a resistor has the following coloured markings The Resistor Colour Code system is all well and good but we need to understand how to apply it in order to get the correct value of the resistor.
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