IRKT105/10A

Overview

The IRKT105/10A is a Thyristor/Diode module from the IRK.105 series, manufactured by Vishay General Semiconductor - Diodes Division. It features an ADD-A-pak Gen V package with a TO-240AA footprint and isolated case connection. The device provides a maximum repetitive peak off-state voltage (VRRM) of 1000 V and supports a maximum average on-state current (IT(AV)) of 105 A at a case temperature of 85°C. As an AC switch, it handles a continuous RMS on-state current (IO(RMS)) of 235 A. Key electrical ratings include a non-repetitive surge current (ITSM) of 1785 A at 50 Hz and 1870 A at 60 Hz. The junction operating temperature range spans from -40°C to 130°C.

Feature Summary

• Utilizes Direct Bonded Copper substrate for excellent thermal performance combined with a solid copper baseplate for mechanical ruggedness.
• Features thick aluminum metal die and double stick bonding to enhance reliability under high voltage conditions.
• Includes a click-stop feature to secure electrical terminals against axial pull-out.
• Offers UL E78996 approval and up to 3500 VRMS isolating voltage.

Applications

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

Procurement Notes

Verify the specific ordering code suffix to confirm the dv/dt rating, as standard versions operate at 500 V/µs while S90 variants offer 1000 V/µs. Confirm that the required configuration matches the available circuit options such as single thyristor/diode or dual configurations. Ensure mounting hardware complies with the specified torque requirements for the TO-240AA style package to maintain proper thermal interface integrity.

Selection Notes

Select this component when a 1000 V blocking capability is required alongside high surge handling. The 105 A average current rating suits applications demanding robust conduction at elevated case temperatures. Consider the integrated diode configuration if bidirectional switching or rectification within a single module is necessary. Verify that the system's thermal resistance allows the junction temperature to remain within the 130°C maximum limit during operation.

Part Context

This module belongs to the IRK.105 series, which includes various voltage codes ranging from 400 V to 1600 V. The '10' in the model number designates the 1000 V rating. The series utilizes the Generation V Add-A-pak technology, designed for industrial environments requiring high isolation and ease of heatsink mounting. Other series members share similar mechanical dimensions but differ in voltage and current specifications.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

FAQ

What is the difference between the standard IRKT105/10A and the IRKT105/10AS90?

The standard version has a critical rate of rise of off-state voltage (dv/dt) of 500 V/µs, whereas the S90 variant offers an increased dv/dt rating of 1000 V/µs.

How is the terminal connection secured in this module?

The electrical terminals are fixed to the module housing via a click-stop feature designed to prevent axial pull-out.

What is the maximum holding current for this device?

The maximum holding current (IH) is 200 mA at a junction temperature of 25°C with a resistive load and open gate circuit.