IRKH41/12A

Overview

The IRKH41/12A is a thyristor module manufactured by Vishay General Semiconductor - Diodes Division. It is classified as an SCR (Silicon Controlled Rectifier) double low-scrambling device housed in an ADD-A-PAK package. The component is rated for a maximum repetitive peak off-state voltage of 1200V and has a nominal on-state current capacity of 100A. It operates within a junction temperature range of -55°C to 150°C. The device is lead-free and RoHS compliant, designed for high-power industrial applications requiring robust switching capabilities.

Feature Summary

• Double low-scrambling SCR configuration for enhanced control
• High voltage blocking capability up to 1200V
• Robust thermal management via ADD-A-PAK packaging
• Compliant with lead-free and RoHS environmental standards

Applications

• Industrial motor drives and control systems
• High-power AC power regulation circuits
• Resistive load switching applications
• Static power switches for heavy machinery

Procurement Notes

Verify the specific datasheet version and ordering suffixes when sourcing. Confirm that the ADD-A-PAK mounting requirements match your thermal design. Ensure compliance with RoHS and lead-free specifications if required by your assembly process. Cross-reference the 1200V rating against your circuit's peak transient voltages to ensure adequate safety margins during procurement validation.

Selection Notes

Select this component when a high-voltage, high-current SCR solution is needed in a compact module form factor. The 1200V rating suits medium-to-high voltage AC systems. Consider the thermal resistance characteristics of the ADD-A-PAK package for heatsink selection. Verify gate trigger requirements against your control circuitry to ensure reliable turn-on under expected operating conditions.

Part Context

This part belongs to the IRKH41 series of SCR modules from Vishay. The series offers various voltage ratings, with the /12A suffix denoting the 1200V variant. These modules are engineered for durability in demanding environments, providing a reliable alternative to discrete thyristor assemblies in power electronics designs requiring integrated protection and switching.

Replacement Considerations

Direct replacements must match the 1200V rating, 100A current capacity, and ADD-A-PAK footprint. Check equivalent models from other manufacturers offering double low-scrambling SCRs in similar packages. Ensure gate characteristics and thermal performance are comparable to maintain system reliability without redesigning the PCB or heatsink interface.