IRKH56/08A

Overview

The IRKH56/08A is a silicon controlled rectifier module manufactured by Vishay General Semiconductor - Diodes Division. It features a common cathode configuration with two SCRs housed in an ADD-A-PAK (3 + 2) package. The device supports a maximum repetitive peak off-state voltage of 800 V and an average on-state current of 60 A, with a root mean square on-state current rating of 95 A. Non-repetitive surge currents are rated at 1310 A for 50 Hz and 1370 A for 60 Hz frequencies. Gate trigger parameters include a maximum voltage of 2.5 V and a maximum current of 150 mA. The holding current maximum is 200 mA, and the operating junction temperature range spans from -40°C to 125°C.

Feature Summary

• Common cathode structure integrating two SCRs within a single base-mounted module
• High surge current capability designed for demanding power switching applications
• Robust thermal performance supporting operation up to 125°C junction temperature

Applications

• Industrial motor control systems
• Power supply circuits requiring high current handling
• Inverter and converter topologies

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm part status as discontinued or obsolete prior to procurement planning. Ensure compatibility with existing thermal management solutions and gate drive requirements. Validate packaging integrity upon receipt to prevent damage to the ADD-A-PAK terminals during installation.

Selection Notes

Select this module when designing circuits requiring a common cathode SCR arrangement with 800 V blocking capability. Consider the 60 A average current rating against continuous load profiles and derating factors. Evaluate the 1310 A/1370 A surge ratings for fault condition resilience. Ensure the ADD-A-PAK footprint fits the mechanical constraints of the target assembly.

Part Context

This component belongs to Vishay's IRKH series of silicon controlled rectifier modules. These devices are engineered for high-power industrial applications where reliable switching and high current capacity are essential. The series utilizes advanced silicon technology to ensure stable performance across varying thermal conditions.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific model were not identified in available documentation. Verify electrical and mechanical compatibility if considering alternative manufacturers or pin-compatible equivalents.