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.

Target time constant (ns)

Required number input.

Snubber capacitance (nF)

Required number input.

Compute the RC snubber resistor R = tau / C from a target time constant in ns and capacitance in nF. 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]

Snubber resistance (ohm)

The resulting snubber resistance returned as a number.

• Snubber sizing depends on measured or modeled parasitic inductance and capacitance, switching waveform, damping target, repetition rate, component pulse rating, temperature, and layout. An incorrect network can increase loss or device stress.
• 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.

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