IRKH91/12A

Overview

The IRKH91/12A is a power semiconductor module manufactured by Vishay General Semiconductor - Diodes Division. It features a series connection configuration combining an SCR and a diode within a single package. The device is rated for a maximum repetitive reverse voltage of 1200 V and supports a high average forward current of 210 A. Designed for robust industrial applications, it utilizes the ADD-A-PAK (3 + 2) housing style to facilitate efficient thermal management and secure chassis mounting.

Feature Summary

• Integrates a Silicon Controlled Rectifier and a diode in a single series-connected module
• High current handling capability with 210 A average forward current rating
• Robust voltage blocking performance up to 1200 V repetitive reverse voltage
• Chassis mount design utilizing the ADD-A-PAK (3 + 2) package for reliable installation

Applications

• Industrial motor drives and control systems
• High-power DC power supply circuits
• Inverter and converter topologies requiring combined switching and rectification
• Welding equipment power stages

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the specific lot matches the required electrical specifications and package integrity. Check for RoHS compliance status if environmental regulations apply to the end product. Ensure proper handling procedures are followed due to the sensitive nature of power semiconductor devices.

Selection Notes

Select this module when a combined SCR and diode function is required in a compact form factor. The 1200 V rating suits medium-voltage industrial applications. Consider the 210 A current capacity for heavy-duty loads. Evaluate thermal resistance requirements against the system's cooling capabilities. Verify compatibility with the ADD-A-PAK mounting interface for mechanical integration.

Part Context

This component belongs to the IRKH series of power modules from Vishay. These modules are designed for high-performance applications where space efficiency and thermal reliability are critical. The series typically offers various voltage and current ratings to suit different power levels. The ADD-A-PAK packaging provides a standardized solution for chassis mounting in industrial environments.

Replacement Considerations

Public sources indicate that the IRKH91/12A is obsolete and no longer manufactured. Engineers should consult Vishay's official documentation for recommended replacement parts or equivalent series components that meet the same 1200 V and 210 A specifications.