IRKT92/16A

Overview

The IRKT92/16A is a dual Silicon Controlled Rectifier (SCR) module manufactured by Vishay General Semiconductor. It features a 1600V repetitive peak reverse voltage and an on-state current of 95A, with a maximum RMS on-state current of 210A. The device utilizes the ADD-A-PAK package in a TO-240AA form factor, providing an isolated flange mount configuration. It operates within a junction temperature range of -40°C to 125°C and includes built-in diodes for series connection applications.

Feature Summary

• Dual SCR configuration with integrated diodes
• High surge capability and robust industrial design
• Isolated flange mount for efficient heatsink attachment
• Compliant with UL safety standards

Applications

• Industrial power control systems
• Motor drive circuits
• Resistive heating applications
• DC motor speed controllers

Procurement Notes

Verify that the specific order matches the IRKT92/16A designation, as the broader IRKT92 family includes variants with different voltage ratings such as 1200V or 1600V. Confirm the requirement for the double SCR structure with built-in diodes versus single configurations. Ensure compatibility with the specified TO-240AA mounting dimensions and thermal management requirements for the intended application environment.

Selection Notes

Select this component when a high-voltage, dual-thyristor solution with integrated freewheeling diodes is required. The 1600V rating suits medium-to-high voltage DC applications. Consider the 210A RMS current capacity for heavy-duty loads. The isolated baseplate simplifies thermal interface design compared to non-isolated alternatives, making it suitable for chassis-mounted installations where electrical isolation from the heatsink is mandatory.

Part Context

This part belongs to the IRK.71/.91 series of thyristor modules from Vishay. These modules are designed for high-power industrial environments, offering a standard package footprint compatible with existing TO-240AA layouts. The series emphasizes lead-free construction and high reliability, targeting applications requiring robust switching capabilities and standardized mechanical integration for scalable power system designs.

Replacement Considerations

Direct substitutes include other Vishay IRKT92 series variants like the IRKT92/12A for lower voltage needs, provided the 1200V rating suffices. Cross-brand replacements require matching the 1600V blocking voltage, 210A RMS current, and TO-240AA physical dimensions. Verify that any alternative maintains the dual SCR plus diode configuration and isolated flange characteristics.