IRKT57/14A

Overview

The IRKT57/14A is a thyristor module from the IRK.41/.56 series, manufactured by Vishay General Semiconductor - Diodes Division (formerly International Rectifier). It utilizes the ADD-A-pak GEN V power module package with a TO-240AA case style. The device features a 1400V repetitive peak off-state voltage and supports an average on-state current of 60A at 85°C. Key electrical characteristics include a maximum peak surge current of 1310A at 50Hz and a junction temperature range of -40°C to 125°C.

Feature Summary

• High voltage capability up to 1600V with industrial standard packaging
• Robust mechanical design featuring thick copper baseplate for improved thermal spreading
• Direct Bonded Copper substrate construction for superior thermal performance
• UL approved isolation with 3500VRMS isolating voltage

Applications

• High voltage regulated power supplies
• Lighting circuits
• Temperature control circuits
• Motor speed control circuits
• UPS systems and battery chargers

Procurement Notes

Verify the specific voltage code suffix corresponds to the required 1400V rating, as the series spans 400V to 1600V. Confirm the 'T57' designation indicates the configuration without an auxiliary cathode if that topology is required for the circuit design. Ensure compatibility with the TO-240AA mounting footprint and torque specifications during integration.

Selection Notes

Select this component for general purpose high voltage applications requiring robust surge handling and easy heatsink mounting. The Generation V Add-A-pak module offers mechanical ruggedness due to the solid copper baseplate, which tolerates surface roughness better than previous generations. Consider the 60A average current rating relative to the expected conduction angle and case temperature derating curves provided in the datasheet.

Part Context

This part belongs to the IRK.41/.56 series of thyristor/diode modules. The 'T' in the model number denotes the Thyristor configuration within the ADD-A-pak GEN V family. These modules are designed for industrial level qualification and feature a click-stop terminal securing mechanism to prevent axial pull-out, ensuring reliable electrical connections in high-vibration environments.

Replacement Considerations

IRKT41/14A is a compatible alternative within the same series offering similar electrical ratings but potentially different internal configurations or current codes. Verify pinout compatibility and thermal resistance values when substituting.