IRKH71/10A

Overview

The IRKH71/10A is a silicon controlled rectifier module manufactured by Vishay General Semiconductor - Diodes Division. It features a series-connected SCR and diode configuration within an ADD-A-PAK (3 + 2) flange mount package. The device supports a maximum repetitive off-state voltage of 1 kV and an average on-state current of 75 A, with a maximum RMS on-state current of 165 A. Gate triggering requirements include a maximum voltage of 2.5 V and current of 150 mA. Non-repetitive surge currents are rated at 1665 A for 50 Hz and 1740 A for 60 Hz frequencies. The component operates within a junction temperature range of -40°C to 125°C.

Feature Summary

• Integrates one SCR and one diode in a single series-connected module structure
• Utilizes an isolated flange mount design for efficient thermal management
• Engineered for high-power industrial applications requiring robust surge handling

Applications

• Industrial motor drives
• Inverter circuits
• Welding equipment

Procurement Notes

Verify the specific suffix designation to confirm the exact voltage rating, as the base model number corresponds to a family with multiple voltage variants. Confirm that the procurement channel provides official documentation from Vishay or authorized distributors. Ensure the component matches the required electrical specifications for the intended circuit design before finalizing orders.

Selection Notes

Select this component when a combined SCR and diode solution is required for phase control or inversion. Consider the 1 kV blocking capability and 75 A continuous current rating against the load requirements. Evaluate the ADD-A-PAK package dimensions for compatibility with existing heatsink infrastructure and mounting hardware constraints.

Part Context

This part belongs to the IRKH71 series of power semiconductor modules designed for high-current applications. The series offers various voltage ratings, including 600 V, 800 V, and 1.2 kV options, allowing designers to choose the appropriate blocking voltage for their specific system needs while maintaining consistent mechanical and thermal characteristics across the family.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Engineers should consult official cross-reference guides or contact the manufacturer directly for validated equivalent components.