SMD Resistor Code Calculator

SMD Resistor Code Calculator allows you to determine resistance by the SMD (surface mount device) resistor markings found on the device and to determine SMD resistor markings by resistance. It displays rated resistance and resistor tolerance.

This tool supports 3-digit code, 4-digit code and EIA-96 code.

The 3-digit code is used on ±5% tolerance SMD resistors. The first two numbers indicate the significant digits, and the third is the multiplier. "R" is used to indicate the position of a decimal point. Note: there is no multiplier if "R" is used.

The 4-digit code is used on ±1% tolerance SMD resistors. The first three numbers indicate the significant digits while the last digit is the multiplier. "R" is used to indicate the position of a decimal point. Note: there is no multiplier if "R" is used.

The EIA-96 code is used on ±1% tolerance SMD resistors. It uses three characters (two digits and a letter) in which the digits represent the value (for example, 12 = 12th value of the possible range) and the letter represents the multiplier.

To learn more about this tool watch a comprehensive tutorial video on our YouTube channel.


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