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.

Clamping voltage (V)

Required number input.

Stand-off voltage (V)

Required number input.

Compare a TVS diode's specified clamping voltage with its stand-off voltage as a dimensionless ratio. 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]

Clamping-to-stand-off ratio

The resulting clamping-to-stand-off ratio returned as a number.

• TVS, varistor, and Zener protection depends on surge waveform, source impedance, clamping current, dynamic resistance, parasitic inductance, temperature, repetition, energy rating, tolerance, and degradation. Nominal voltage is not the protected-node peak.
• 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.

• Crosstalk Far End Voltage

  Estimate far-end crosstalk voltage from a measured or specified dimensionless far-end coupling coefficient and aggressor voltage; this is not a cable-geometry prediction.

• Crosstalk Near End Voltage

  Estimate near-end crosstalk voltage from a measured or specified dimensionless near-end coupling coefficient and aggressor voltage; this is not a cable-geometry prediction.

• TVS Peak Pulse Power

  Calculate peak transient-voltage-suppressor pulse power as clamping voltage multiplied by peak pulse current at the same point on the device curve.