Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.

SMD code

Required string input.

Decode a three-digit SMD resistor code into resistance in ohms. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Resistance (Ω)

The resulting resistance returned as a number.

• Resistor value, power, noise, and color-code calculations must account for tolerance, temperature coefficient, voltage coefficient, pulse rating, working voltage, package thermal resistance, ambient temperature, and mounting. Required steady-state power should include the manufacturer's derating curve.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.

• Resistor Color Code Decode

  Decode a three-band resistor color code into resistance in ohms.

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  Decode a two-digit EIA-96 base value plus multiplier letter into resistance in ohms.

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  Decode a three-band capacitor color code into capacitance in nanofarads.