SPICE Dialects

datasheet2spice keeps one internal device project and exports simulator specific netlists through emitter dialects.

Supported dialect names:

• common: conservative portable SPICE starter.
• ltspice: LTspice-oriented behavioral sources and native VDMOS model card.
• ngspice: ngspice/SPICE3-oriented behavioral sources and native VDMOS model card.
• pspice: PSpice-style VALUE controlled-source ABM starter.
• hspice: HSPICE-style expression-current-source ABM starter.
• xyce: Xyce/SPICE3 behavioral-source ABM starter.
• qspice: experimental LTspice-like ABM starter for QSPICE review.

Use all built-in dialects:

datasheet2spice emit examples/demo_sic_mosfet/device.json --out build/demo --all --dialect all

Model Family Coverage

abm-basic supports every dialect above. It emits a three-pin subcircuit with smooth channel current, datasheet capacitance tables, body diode, and starter package parasitics.

vdmos-static-fast has two export modes:

• ltspice and ngspice: native .model ... VDMOS(...) card plus a starter double-pulse deck.
• common, pspice, hspice, xyce, and qspice: portable MOS fallback subcircuit using a simple NMOS LEVEL=1 channel, body diode, fixed capacitances, and parasitics. This keeps file generation and early topology checks portable, but it is not a native VDMOS model.

diode-basic supports every dialect above with a portable two-terminal subcircuit and native .model ... D(...) card. The same generated core model is used across dialects because the SPICE diode primitive is widely supported.

diode-abm-dynamic supports every dialect above with a two-terminal subcircuit that combines a DC diode card with behavioral current sources for nonlinear Cj(VR) and reverse-recovery charge release. It uses VALUE, CUR, or SPICE3-style B source syntax according to the selected dialect, so simulator expression compatibility matters more than it does for diode-basic.

Accuracy Notes

Dialect support means the emitter writes a netlist in the syntax family of the target simulator. It does not mean the model is vendor-qualified or fully calibrated.

For transient accuracy, prefer:

1. abm-basic for cross-dialect behavior review.
2. vdmos-static-fast native LTspice/ngspice for fast compact-model sweeps.
3. diode-basic for compact diode smoke checks.
4. diode-abm-dynamic when recovery charge and junction capacitance need to shape transient waveforms before a lab-fitted model exists.
5. Measured double-pulse or curve fitting before design use.

The qspice dialect is intentionally marked experimental until it is backed by automated QSPICE smoke tests.