IRKH91/14A

Overview

The IRKH91/14A is a high-power diode module manufactured by Vishay General Semiconductor - Diodes Division. It utilizes the ADD-A-PAK (3 + 4) package configuration, designed for robust base mounting in industrial power applications. The device features a repetitive peak reverse voltage of 1.4 kV and supports an average on-state current of 95 A with a maximum RMS current of 210 A. It incorporates two silicon rectifier elements configured as a common cathode arrangement within a single isolated housing.

Feature Summary

• High-voltage isolation capability suitable for demanding power conversion environments
• Dual-element common cathode configuration integrated into a single compact module
• Robust thermal management design utilizing the ADD-A-PAK base-mount package structure

Applications

• Industrial motor drive systems requiring high-current rectification
• DC power supply units and inverters operating at elevated voltages
• Welding equipment power stages

Procurement Notes

Verify the specific suffix '14A' against official Vishay documentation to confirm the exact voltage rating and thermal characteristics. Ensure the procurement channel provides original manufacturer traceability. Confirm that the ADD-A-PAK mounting interface matches the mechanical constraints of the target assembly before finalizing orders.

Selection Notes

Select this component when designing circuits requiring a 1.4 kV blocking voltage with significant continuous current handling capabilities. The common cathode topology simplifies bridge rectifier designs compared to discrete components. Evaluate the thermal resistance requirements of the ADD-A-PAK package to ensure adequate heat sinking for the specified 95 A average current rating.

Part Context

This module belongs to the Vishay IRKH series of high-power rectifiers. These devices are engineered for heavy-duty applications where reliability under high electrical stress is critical. The series typically offers various voltage ratings and current capacities within standardized packages to facilitate modular design approaches in power electronics.

Replacement Considerations

Cross-reference with Vishay part numbers sharing the same ADD-A-PAK footprint and identical or superior electrical ratings. Verify pinout compatibility and thermal interface dimensions to ensure direct interchangeability without modifying the printed circuit board layout.