IRKT56/12A

Overview

The IRKT56/12A is a thyristor module from the IRK.56 series, housed in an ADD-A-pak GEN V package with a TO-240AA case style. It features a maximum average on-state current of 60 A at 85°C and supports voltage ratings up to 1600 V, specifically rated for 1200 V (code 12). The device includes a solid copper baseplate for thermal management and offers high surge capability with peak non-repetitive on-state currents reaching 1370 A at 60 Hz.

Feature Summary

• Utilizes Direct Bonded Copper substrate combined with a solid copper baseplate for superior thermal performance and mechanical ruggedness.
• Features thick aluminum metal die and double stick bonding to enhance reliability under high power conditions.
• Includes a click-stop feature to secure electrical terminals against axial pull-out forces.
• Manufactured without hard mold to eliminate direct stress on the leads.

Applications

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

Procurement Notes

Verify the specific voltage code suffix matches the required off-state voltage rating, as the series spans 400V to 1600V. Confirm the generation designation 'A' corresponds to the Gen V package specifications. Ensure gate triggering parameters align with the driver circuit capabilities, particularly regarding peak gate power and current limits at varying junction temperatures.

Selection Notes

Select this module based on the 60 A average current rating and 1200 V blocking voltage requirements. Consider the thermal resistance characteristics when designing heatsink solutions, noting the internal junction-to-case resistance. Evaluate the surge current capabilities against potential fault conditions in the application circuit to ensure adequate safety margins.

Part Context

This component belongs to the IRK.41 and IRK.56 series of thyristor/diode modules manufactured by Vishay General Semiconductor - Diodes Division (formerly International Rectifier). The series is designed for general-purpose high-voltage industrial applications, offering a standardized footprint compatible with TO-240AA mounting standards.

Replacement Considerations

Public confirmed substitute part numbers: VS-VSKE56/12, VS-VSKJ56/12, VS-VSKV56/12.