IRKH136/14

Overview

The IRKH136/14 is a Silicon Controlled Rectifier (SCR) manufactured by Vishay General Semiconductor - Diodes Division, originally under the International Rectifier brand. It features a single element configuration with a built-in series diode and utilizes flange mount installation. The device supports a maximum repetitive peak reverse voltage of 1400 V and a maximum average on-state current of 95 A. Its root mean square on-state current rating is 211.95 A, with a nominal circuit commutated turn-off time of 25 µs. The component operates within a junction temperature range up to 125 °C.

Feature Summary

• Single element SCR structure integrated with a built-in series diode for enhanced functionality
• Flange mount package design providing isolated case connection for thermal management
• Standard recovery characteristics suitable for general purpose power control applications

Applications

• Industrial motor drives and control systems
• High-power DC-AC inversion circuits
• Resistive load switching in industrial heating equipment

Procurement Notes

Verify the manufacturer origin carefully, as this component originates from International Rectifier, now part of Infineon. Confirm that the specific suffix /14 denotes the correct voltage rating variant. Ensure the datasheet matches the flange mount physical dimensions and terminal configuration required for your heat sink interface. Cross-reference the part number with official Infineon or Vishay archives to confirm current production status and any potential obsolescence notices.

Selection Notes

Select this component when a high-current SCR with an integrated blocking diode is required in a compact flange-mount package. The 1400 V rating suits medium-voltage AC line applications. Consider the 25 µs turn-off time for frequency limitations. Verify thermal resistance requirements against the available heatsinking area, as the flange mount relies on direct mechanical contact for heat dissipation. Ensure gate trigger parameters align with the driving circuit capabilities.

Part Context

This device belongs to the high-power thyristor family designed for robust industrial environments. Originally developed by International Rectifier, these components are characterized by high surge current handling and reliable commutation. The integration of a series diode simplifies circuit topology by eliminating the need for external blocking components in certain configurations, reducing overall system complexity and component count.

Replacement Considerations

Consult official Infineon documentation for cross-references. Equivalent parts may include other 1400V flange-mount SCRs with similar RMS current ratings. Verify pinout compatibility and thermal interface specifications before substitution.