IRKH26/16A

Overview

The IRKH26/16A is a Silicon Controlled Rectifier (SCR) manufactured by Vishay General Semiconductor - Diodes Division. It features a single element configuration housed in an isolated TO-240AA compatible Adda-Pak package. The device supports a repetitive peak reverse voltage of 1600V and an RMS on-state current of 60A. Key electrical characteristics include a maximum DC gate trigger current of 150mA, a maximum DC gate trigger voltage of 4V, and a holding current of 200mA. The component operates within a junction temperature range of -40°C to +150°C.

Feature Summary

• High-voltage capability with 1600V blocking voltage for robust power control applications
• Integrated heat sink mounting via isolated flange design for efficient thermal management
• Single element construction with built-in diode functionality for simplified circuit topology

Applications

• Industrial motor drives and speed controllers
• High-power AC power regulation systems
• Welding equipment power supplies

Procurement Notes

Verify the specific suffix codes against official Vishay documentation to ensure correct pinout and thermal interface compatibility. Confirm that the procurement channel provides genuine components with traceable manufacturing dates. Check for any recent product change notices regarding material composition or packaging updates before finalizing orders.

Selection Notes

Select this component when high voltage isolation and robust thermal performance are required in a compact flange-mount package. Ensure the application demands a single-phase SCR configuration with integrated diode protection. Verify that the system's gate drive circuitry can supply the specified 150mA trigger current reliably under all operating conditions.

Part Context

This part belongs to Vishay's high-power thyristor family designed for industrial power electronics. The Adda-Pak series offers standardized mounting dimensions for easy integration into existing heatsink infrastructure. These devices are engineered for durability in harsh electrical environments requiring reliable switching at high voltages.

Replacement Considerations

Consult official Vishay cross-reference guides for direct replacements. Ensure substitute parts match the 1600V rating, 60A current capacity, and TO-240AA mechanical footprint. Verify equivalent thermal resistance and gate trigger specifications to maintain system performance.