IRKT105/14A

Overview

The IRKT105/14A is a thyristor/diode module from the IRK.105 series, manufactured by Vishay General Semiconductor - Diodes Division (formerly International Rectifier). It features an ADD-A-pak GEN V package with a TO-240AA form factor. The device supports a maximum repetitive peak off-state voltage of 1400V and a maximum average on-state current of 105A at 85°C case temperature. It incorporates a thick copper baseplate for thermal management and provides high surge capability with a non-repetitive peak on-state current of 1785A at 50Hz.

Feature Summary

• Utilizes Direct Bonded Copper substrate combined with a solid copper baseplate for superior thermal performance and mechanical ruggedness.
• Features a click-stop terminal securing mechanism to prevent axial pull-out and eliminate direct stress on leads through hard mold-free manufacturing.
• Provides industrial standard isolation with UL approval and up to 3500VRMS isolating voltage between circuits and the base.

Applications

• High voltage regulated power supplies
• Lighting circuits
• Temperature and motor speed control circuits
• UPS systems
• Battery chargers

Procurement Notes

Verify the specific voltage code suffix matches the required blocking voltage, as the IRK.105 series spans 400V to 1600V. Confirm the dv/dt rating requirements; standard units offer 500 V/µs, while S90 variants provide 1000 V/µs. Ensure mounting hardware complies with the specified torque of 5 Nm and that heatsink surface flatness meets the datasheet recommendations for optimal thermal resistance.

Selection Notes

Select based on the required VRRM, which ranges from 400V to 1600V within the IRK.105 family. Consider the thermal resistance characteristics when designing heatsinks, noting the junction-to-case resistance of 0.135 K/W. Evaluate gate triggering parameters against the driver circuit capabilities, specifically the maximum gate current of 270mA at -40°C. Verify if auxiliary cathode configurations are needed, as some variants may lack them.

Part Context

This component belongs to the IRK.105 series of Thyristor/Diode and Thyristor/Thyristor modules. It is part of the Generation V Add-A-pak product line, designed for general-purpose high-voltage applications. The series includes various voltage codes and configuration options, such as single or dual thyristor arrangements, all sharing the same robust mechanical and thermal platform.

Replacement Considerations

IRKT105/16A

FAQ

What is the maximum repetitive peak off-state voltage for the IRKT105/14A?

The maximum repetitive peak off-state voltage (VRRM) for the IRKT105/14A is 1400V.

Does the IRKT105/14A include an auxiliary cathode?

Yes, the standard IRKT105/14A configuration includes an auxiliary cathode. Variants without an auxiliary cathode are designated differently in the ordering information.

What is the recommended mounting torque for the module?

The recommended mounting torque for the busbar is 5 Nm, with a tolerance of ±10%. Rechecking the torque after 3 hours is advised to account for compound spread.