IRKT41/08A

SCRs - Modules Overview

The Vishay IRKT41/08A is a thyristor/diode module from the IRK.41 series, rated for 800 V repetitive peak off-state voltage and 45 A average on-state current at 85°C case temperature. It features a TO-240AA compatible ADD-A-Pak Gen V package with a solid copper baseplate for enhanced thermal spreading and mechanical ruggedness. The device provides 3500 VRMS isolation voltage and supports junction temperatures up to 125°C.

SCRs - Modules Feature Summary

• High surge capability with thick aluminum die and double stick bonding
• Direct Bonded Copper substrate combined with a solid copper baseplate for superior thermal performance
• Elimination of hard mold to prevent direct stress on leads
• Electrical terminals secured against axial pull-out via a click-stop feature

SCRs - Modules Applications

• High voltage regulated power supplies
• Lighting circuits
• Temperature control circuits
• Motor speed control circuits
• UPS systems and battery chargers

SCRs - Modules Procurement Notes

Verify the specific suffix 'S90' if a critical rate of rise of off-state voltage (dv/dt) of 1000 V/µs is required; standard versions are rated at 500 V/µs. Confirm that the ordering code includes the correct voltage and current designators matching the application requirements. Ensure mounting torque specifications are strictly followed to maintain thermal interface integrity.

SCRs - Modules Selection Notes

Select this component for general purpose high voltage applications requiring industrial standard packaging. Consider the 45 A average current rating relative to the expected conduction angle and case temperature derating curves. Evaluate the need for auxiliary cathodes or specific dv/dt ratings based on circuit switching speeds and load characteristics.

SCRs - Modules Part Context

This module belongs to the IRK.41 and IRK.56 series manufactured by Vishay General Semiconductor - Diodes Division. It utilizes the Generation V Add-A-Pak technology, which integrates a Direct Bonded Copper substrate with a solid copper baseplate. The series is designed for robust industrial environments with high thermal cycling tolerance.

SCRs - Modules Replacement Considerations

IRKT56/08A

SCRs - Modules FAQ

What is the maximum critical rate of rise of off-state voltage (dv/dt)?

The standard version has a maximum dv/dt of 500 V/µs. An optional S90 suffix indicates a higher rating of 1000 V/µs.

How is the electrical terminal connection secured?

The electrical terminals are fixed to the module housing via a click-stop feature designed to secure them against axial pull-out.

What is the recommended mounting procedure regarding torque?

A mounting compound is recommended, and the torque should be rechecked after a period of 3 hours to allow for the spread of the compound.