IGBT modules package multiple IGBT dies together with freewheeling diodes in a single housing, replacing hand-wired discrete assemblies. They mainly serve medium/high-power VFDs, motor drives and PV inverters. Compared with discrete solutions, module packaging raises power density, simplifies busbar and thermal design, and lets standard topologies (half-bridge, three-phase bridge, etc.) map directly onto the end circuit, shortening development time.
Reading the Key Parameters
- VCE_Max (VCES, blocking voltage): listed parts span four classes — 400V, 650V, 750V and 1200V — matching different DC-bus levels. Rate against the bus voltage plus switching spikes, not just the steady-state level.
- IC (rated current): listed parts range from 15A to 950A, spanning small drives to high-power VFDs. Derate the rated current against actual load current and thermal conditions rather than running at nameplate value continuously.
- VCE(sat) (conduction drop, typical @VGE=15V): listed data mostly falls between 1.43V and 1.85V, with a few parts reaching 2.0V. Lower values cut conduction loss but often trade off against turn-off tail loss — weigh both against switching frequency.
- Package: the catalog spans Flow2, Easy3b+BP and the T/H/C platform families (e.g. T4.0, H5.0, C3.0). Package sets thermal footprint, mounting method and busbar clearance — match it to the end equipment's mechanical layout.
- Configuration/application: some parts are marked for specific topologies such as 3-Level, or for automotive use — match these directly to the end circuit's topology and qualification requirements.
Three Steps to Select
- Lock the VCES and IC class from bus voltage and peak current, leaving margin for switching spikes and load variation;
- Weigh VCE(sat) against switching loss at the target switching frequency, and check total module loss against junction-temperature margin;
- Match the package to the heatsink and busbar layout, and confirm topology/pinout against the end circuit.
Common Pitfalls
- Matching only rated current to a legacy part number while ignoring derating factors and thermal differences under actual conditions;
- Comparing VCE(sat) values without matching test conditions (gate voltage, junction temperature) — the numbers aren't directly comparable across conditions;
- Overlooking how package differences change mounting hole spacing and creepage distance, driving unplanned mechanical rework.
More parts can be filtered by voltage, current, package and other criteria in the online selector; submit a part inquiry for specific fit questions.
Related guide: Industrial Power Modules Selection Guide