![]() The resistance values are standardized these values are called preferred values.īefore industry standards were established, each manufacturer used their own unique system for color coding or marking their components. At a minimum, two bands indicate the resistance value and one band serves as multiplier. The number of bands varies from three to six. Together they specify the resistance value, the tolerance, and sometimes the reliability or failure rate. The color code is given by several bands. ![]() In addition to defining the color bands, the standard also includes numerical codes, as often used for surface mount SMD resistors. This standard describes the marking codes for resistors and capacitors. The coding is defined in the international standard IEC 60062. ![]() Practically all leaded resistors with a power rating up to one watt are marked with color bands. Resistor values are often indicated with color codes. Resistor Color Coding uses colored bands to quickly identify a resistors resistive value and its percentage of tolerance with the physical size of the resistor indicating its wattage rating. A Resistor Color Code is used to indicate the values or functions of resistors.
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