IRKT105/16A

Overview

The IRKT105/16A is a thyristor/diode module from the IRK.105 series, utilizing ADD-A-pak GEN V packaging with a TO-240AA form factor. It features a 105 A average on-state current rating and supports voltage codes ranging from 400 V to 1600 V. The device offers high surge capability with an ITSM of 1785 A at 50 Hz and includes a solid copper baseplate for thermal management. Key electrical parameters include a maximum junction temperature of 130°C, a holding current of 200 mA, and a peak gate trigger current of 270 mA.

Feature Summary

• Features thick aluminum metal die and double stick bonding for enhanced ruggedness.
• Incorporates a Direct Bonded Copper (DBC) substrate with a solid copper baseplate for superior thermal performance.
• Provides 3500 VRMS isolating voltage between circuits and the grounded heatsink.
• Utilizes a click-stop feature to secure electrical terminals against axial pull-out.

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 (e.g., /16A for 1600V) matches the required application rating. Confirm the dv/dt specification; standard units are rated at 500 V/µs, while S90 variants offer 1000 V/µs. Ensure mounting hardware complies with the specified torque requirements and that the heatsink interface is flat and smooth for optimal thermal transfer.

Selection Notes

Select based on the required blocking voltage within the 400 V to 1600 V range. Consider the conduction angle and case temperature limits when determining continuous current ratings. Evaluate the need for auxiliary cathodes or specific dv/dt ratings. Verify compatibility with TO-240AA heatsinks and ensure the isolation voltage meets system safety requirements.

Part Context

This component belongs to the IRK.105 series of thyristor/diode modules manufactured by Vishay General Semiconductor - Diodes Division. The series utilizes the Generation V Add-A-pak technology, which combines DBC substrates with copper baseplates. These modules are designed for industrial-level applications requiring high voltage handling and robust mechanical construction.

Replacement Considerations

IRKT105/04A through IRKT105/14A share the same package and current ratings but differ in voltage codes. IRKT106/16A provides similar characteristics without an auxiliary cathode. Cross-reference with other manufacturers' TO-240AA SCR modules only if pinout and thermal specifications match exactly.

FAQ

What is the maximum junction operating temperature?

The maximum junction operating temperature (TJ) is 130°C.

How does the dv/dt rating vary?

Standard units have a critical rate of rise of off-state voltage (dv/dt) of 500 V/µs. Units with the S90 suffix are rated for 1000 V/µs.

Is the case isolated from the circuit?

Yes, the module provides 3500 VRMS isolation voltage between the circuit terminals and the baseplate/heatsink.