SKM400GA12T4 — SEMITRANS® IGBT Module
The SKM400GA12T4 is a SEMITRANS® 4 IGBT module developed by Semikron for use in power electronics applications that require high current handling and stable operation. This 400 A / 1200 V module is based on IGBT4 trench technology with CAL4 diodes and features an isolated DBC baseplate for efficient thermal transfer. It is suitable for use in AC inverters, UPS systems, welding equipment, and motor drives.
The module supports switching frequencies up to 20 kHz and includes integrated gate resistors. With its 1200 V collector-emitter blocking voltage and 400 A nominal current rating, the SKM400GA12T4 maintains low switching and conduction losses while ensuring effective heat dissipation through low thermal resistance values. These characteristics allow consistent performance under load conditions.
The mechanical and electrical design incorporates UL recognition, appropriate clearance and creepage distances, and threaded mounting for secure assembly. With reliable thermal performance and short-circuit capability, the SKM400GA12T4 is suited for long-term use in industrial and commercial environments where predictable operation is required.
Key Specs
| Specification | Value |
|---|---|
| Manufacturer / Series | SEMIKRON — SEMITRANS® 4 (SKM400GA12T4) |
| Maximum collector-emitter voltage (V_CES) | 1200 V |
| Nominal collector current (I_C) | 400 A |
| Pulsed collector current (I_CM, typical) | up to ≈ 1.2 kA |
| IGBT technology | IGBT4 trench type |
| Diode technology | CAL4 diode |
| Switching frequency (recommended max) | Up to 20 kHz |
| Thermal resistance (junction-to-case) | Rth(j-c) diode ~0.14 K/W; module Rth(c-s) 0.02–0.038 K/W |
| Qrr (reverse charge) @ Tj = 150 °C | ≈ 78 µC |
| Err (reverse recovery energy) @ Tj = 150 °C | ≈ 37 mJ |
| On-state resistance / internal terminal resistance | ≈ 0.18 mΩ (25 °C), ≈ 0.22 mΩ (125 °C) |
| Package dimensions (L × W × H) | 106 × 62 × 37 mm |
| Weight | ≈ 330 g |
| Mounting / Torque | Heat-sink screws M6 (3–5 Nm); terminal torques M6 2.5–5 Nm, M4 1.1–2 Nm |
| Safety / approvals | UL recognized (file E63532) |
For more detailed information, please refer to the SEMIKRON datasheet: SEMIKRON SKM400GA12T4 Datasheet (PDF).
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