The IRK.41 and IRK.56 series are IRF's fourth-generation high-voltage power modules with thick aluminum metal dies and double-layer bonding technology, with power ratings of 45A and 60A and rated voltages of 400-1600V.
The IRK.41 and IRK.56 series are high‑voltage Add‑A‑pak™ power modules designed for industrial applications such as regulated power supplies, lighting, motor‑speed control, UPS and battery chargers. They feature a thick copper baseplate for easy mounting on heatsinks, UL‑E78996 approval, and a maximum repetitive off‑state voltage up to 1600 V.
The datasheet provides detailed electrical specifications, thermal characteristics, mechanical dimensions, and ordering information. Key parameters include on‑state current ratings, peak forward current, junction thermal resistance, and recommended mounting torque.
| Junction thermal resistance | 0.23 °C/W (IRK.41) / 0.20 °C/W (IRK.56) |
|---|---|
| Case style | TO‑240AA |
| Approximate weight | 110 g |
The junction thermal resistance of the IRK.41 module is 0.23 °C/W.
Both IRK.41 and IRK.56 modules use a TO‑240AA case style.