IRKT72/12A

Overview

The IRKT72/12A is a Silicon Controlled Rectifier (SCR) module manufactured by Vishay General Semiconductor - Diodes Division. It features a rated repetitive peak off-state voltage of 1200V and an RMS on-state current of 165A. The device utilizes the ADD-A-PAK package with TO-240AA dimensions, designed for flange mounting. Key electrical characteristics include a non-repetitive peak surge current capability of 1940A and a maximum DC gate trigger current of 150mA. The module operates within a junction temperature range of -40°C to 125°C.

Feature Summary

• High surge current capability suitable for demanding industrial applications
• Standardized TO-240AA form factor ensuring mechanical compatibility
• Robust isolation provided by the ADD-A-PAK packaging structure

Applications

• Industrial motor drives and control systems
• High-power AC power regulation circuits
• Welding equipment power stages

Procurement Notes

Verify the specific suffix designation against official Vishay documentation to confirm exact voltage ratings and thermal characteristics. Ensure that the procurement channel provides genuine components with traceable manufacturing data. Confirm compliance requirements such as RoHS status if applicable to the target assembly specifications before finalizing orders.

Selection Notes

Select this component when a 1200V blocking voltage and 165A continuous current handling are required in a standardized flange-mount package. Consider the thermal resistance of the ADD-A-PAK design for heatsink interface planning. Evaluate the gate trigger parameters against the driving circuit capabilities to ensure reliable turn-on under all operating conditions.

Part Context

This part belongs to the IRKT72 series of thyristor modules from Vishay. These modules are engineered for high-voltage industrial applications requiring robust performance in compact footprints. The series leverages thick aluminum die and double-stick bonding technologies to enhance reliability and thermal dissipation compared to standard discrete solutions.

Replacement Considerations

Cross-reference with other manufacturers offering TO-240AA compatible SCR modules. Verify that substitute parts match the 1200V rating, 165A current capacity, and pinout configuration. Ensure thermal and electrical parameters meet or exceed the original specifications for direct replacement.