This document describes the features and characteristics of a series of high voltage power modules, including high voltage electrically isolated base plate, industrial standard package, simplified mechanical designs, high surge capability, etc. These modules can be used for general purpose applications such as battery chargers, welders, plating equipment, motor drives, UPS, etc.
The IRK series from International Rectifier comprises high‑voltage SCR/SCR‑diode power modules (IRK.170, IRK.230, IRK.250) designed for general‑purpose applications such as battery chargers, welders, plating equipment, motor drives and UPS systems. The modules feature electrically isolated base plates, large creepage distances and UL E78996 approval.
The bulletin provides detailed electrical ratings, thermal and mechanical specifications, switching characteristics, and ordering information. Application notes describe use in current‑source inverters, highlighting the modules' suitability for high‑voltage, high‑current inverter designs.
| Maximum average on‑state current | 170 A (IRK.170), 230 A (IRK.230), 250 A (IRK.250) |
|---|---|
| Maximum RMS on‑state current | 377 A (IRK.170), 510 A (IRK.230), 555 A (IRK.250) |
| Junction operating temperature range | -40 °C to 130 °C |
| Storage temperature range | -40 °C to 150 °C |
| Isolation voltage (off‑state blocking) | 3000 V RMS |
| Thermal resistance, junction‑to‑case | 0.125 K/W |
The IRK.250 can handle up to 250 A average on‑state current.
The junction operating temperature is –40 °C to 130 °C, and the storage temperature range is –40 °C to 150 °C.
Yes, the modules are UL E78996 approved.