IRKT106/16A

Overview

The IRKT106/16A is a thyristor/thyristor 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 footprint and isolated flange mounting. The device supports voltage ratings up to 1600V VRRM/VDRM and provides a maximum average on-state current of 105A at 85°C case temperature. Key electrical characteristics include a peak non-repetitive surge current of 1785A at 50Hz and a maximum junction operating temperature range of -40°C to 130°C.

Feature Summary

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

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 configuration code matches the required circuit topology, as the IRK.105 series includes various configurations such as single elements, common anode pairs, and integrated diodes. Confirm that the dv/dt rating aligns with application requirements, noting that standard units are rated at 500 V/µs while S90 variants offer 1000 V/µs. Ensure compliance with lead-free or RoHS status if mandated by project specifications, as this generation may contain lead.

Selection Notes

Select based on the required blocking voltage, which ranges from 400V to 1600V within the series. Consider the thermal resistance characteristics, specifically the junction-to-case resistance of 0.135 K/W per module, when designing heatsinking solutions. Evaluate the surge current capabilities against potential fault conditions in the system. Verify the gate triggering parameters to ensure compatibility with the drive circuitry, particularly regarding peak gate power and current limits.

Part Context

This component belongs to the IRK.105 series of ADD-A-pak Gen V power modules. These modules are designed for general-purpose high-voltage applications requiring robust mechanical and thermal performance. The series encompasses various circuit configurations including thyristor/diode and thyristor/thyristor arrangements, all sharing a standardized TO-240AA compatible footprint for easy integration into existing designs.

Replacement Considerations

IRKN106/14A: Single element with built-in diode configuration.

FAQ

What is the difference between the standard IRKT106/16A and the S90 variant?

The standard IRKT106/16A has a maximum critical rate of rise of off-state voltage (dv/dt) of 500 V/µs. The S90 variant increases this rating to 1000 V/µs.

How is the isolation voltage defined for this module?

The module provides an RMS isolation voltage of 2500V for 1 minute at 50 Hz and 3500V for 1 second between the circuit terminals and the base plate.

What is the maximum holding current specified for the device?

The maximum holding current is 200 mA, measured at a junction temperature of 25°C with a 6V anode supply and resistive load.