IRKH105/04A

SCRs - Modules Overview

The IRKH105/04A is a silicon controlled rectifier module manufactured by Vishay General Semiconductor - Diodes Division. It features a series connection of one SCR and one diode, housed in an ADD-A-PAK (3 + 4) chassis mount package. The device has a maximum repetitive off-state voltage of 400 V and an average on-state current rating of 105 A. The root mean square on-state current is rated at 235 A. Maximum gate trigger voltage is 2.5 V, with a maximum gate trigger current of 150 mA. The holding current maximum is 250 mA. Non-repetitive surge current ratings are 2000 A at 50 Hz and 2094 A at 60 Hz. The operating junction temperature range extends from -40°C to 130°C.

SCRs - Modules Feature Summary

• Series connection configuration integrating one SCR and one diode within a single module
• Chassis mount design utilizing the ADD-A-PAK (3 + 4) package for robust thermal management
• High current handling capability with specified RMS on-state current ratings suitable for power conversion

SCRs - Modules Applications

• Industrial motor drives requiring high current switching
• AC power control systems utilizing phase angle firing
• Inverter circuits in power electronics applications

SCRs - Modules Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific manufacturing date codes against project requirements. Check for obsolete status indicators as availability may be limited. Ensure proper handling procedures for chassis mount modules during installation to maintain electrical isolation and thermal performance integrity.

SCRs - Modules Selection Notes

Select this module when a combined SCR and diode solution is required for series-connected topologies. Evaluate thermal resistance characteristics against heat sink capabilities for the intended ambient conditions. Verify that the 400 V blocking voltage meets the peak reverse voltage demands of the AC line or circuit being controlled. Consider the physical dimensions of the ADD-A-PAK package for mechanical fit within the enclosure design.

SCRs - Modules Part Context

This component belongs to the IRKH105 series of thyristor modules from Vishay General Semiconductor. The series offers various voltage ratings including 400 V, 800 V, 1200 V, and 1600 A variants, all sharing similar current ratings and package styles. These modules are designed for high-power industrial applications where reliable switching and high surge current tolerance are critical operational parameters.

SCRs - Modules Replacement Considerations

Public confirmed substitute part numbers include VS-VSKL105/04. When substituting, verify identical pinout configurations, mounting hole patterns, and electrical specifications. Ensure the replacement module meets the same thermal and voltage requirements for the specific application environment.