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.

Breakdown (V) (V)

Required number input.

Pulse Current (A) (A)

Required number input.

Dynamic Resistance (Ω) (Ω)

Required number input.

Estimate ESD protection clamping voltage with a fitted dynamic-resistance model V=Vbr+I Rd; use device pulse-current data for the chosen waveform. 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 (V) (V)

The resulting clamping (v) returned as a number.

• EMI attenuation and protection calculations depend on source and load impedance, parasitics, layout, enclosure seams, cable coupling, frequency, pulse shape, and test standard. Component impedance curves alone do not demonstrate emissions, immunity, or ESD compliance.
• 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.

• ESD Human Body Model Current

  Estimate idealized HBM short-circuit peak current from charging voltage and the 1500-ohm series resistor; not a substitute for a JS-001 waveform test.

• 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.

• Varistor Clamping Voltage

  Estimate MOV clamping voltage at a specified current from a calibrated power-law V–I curve V=Vref(I/Iref)^(1/alpha); alpha must come from device data.