Use this semiconductor calculation for first-order device, material, fabrication, interconnect, packaging, or reliability estimates when every coefficient and unit convention is known.

Blocking Volts (V)

Required number in V.

Switched Amperes (A)

Required number in A.

Overlap Seconds (s)

Required number in s.

The cited overview of Insulated-gate bipolar transistor supplies background for the terminology and domain context used by this tool.^[1]

Triangular-overlap estimate of IGBT turn-off energy; tail current and stray-inductance overshoot require waveform integration. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.

Turn Off Joules (J)

Returned number in J.

• Material composition, geometry, process history, temperature, electric field, bias, interfaces, parasitics, and fitted parameter ranges can invalidate a compact semiconductor model.
• Blocking Volts must be at least 0.
• Switched Amperes must be at least 0.
• Overlap Seconds must be at least 0.
• Use finite inputs in the displayed units, preserve source measurements and assumptions, and independently verify consequential decisions.

Compare the estimate with measured process data, current device documentation, and a higher-fidelity circuit, field, thermal, quantum, or TCAD model when the decision requires it.

• IGBT Switching Energy Eon

  Triangular-overlap estimate of IGBT turn-on switching energy from blocking voltage, current and measured overlap time.

• IGBT Conduction Voltage Drop

  Piecewise-linear IGBT on-state voltage estimate from intercept voltage and differential on-resistance at a given current.

• Avalanche Breakdown Voltage Calculator

  Estimate one-sided abrupt-junction avalanche breakdown voltage from the peak critical field and depletion width: Vb ≈ Ecrit·W/2. The factor 50 converts MV/cm·µm to volts and includes the triangular-field factor of one half. The estimate neglects curvature, edge termination, and the full ionization integral.