IRKT26/14A

Overview

The IRKT26/14A is a thyristor/diode module from the IRK.26 series, rated for 1400V repetitive off-state voltage and 27A average on-state current. It features an ADD-A-pak Gen V package with a thick copper baseplate for thermal efficiency. Key electrical parameters include a 400A non-repetitive surge current (50Hz), 800 A²s I²t rating, and 3500V RMS isolation voltage. The device operates within a junction temperature range of -40°C to 125°C.

Feature Summary

• Thick aluminum metal die and double stick bonding for enhanced ruggedness
• Direct Bonded Copper substrate combined with a solid copper baseplate for superior thermal performance
• Click-stop terminal fixation securing electrical connections against axial pull-out
• UL E78996 approved with high surge capability

Applications

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

Procurement Notes

Verify the specific dv/dt rating upon procurement. Standard units have a critical rate of rise of 500 V/µs. Units requiring 1000 V/µs must be ordered with the S90 suffix (e.g., IRKT26/14AS90). Confirm that the ordering code matches the required voltage and configuration specifications before finalizing purchase orders.

Selection Notes

Select this component for general-purpose high voltage applications requiring industrial standard packaging. Ensure the thermal resistance characteristics align with the heatsink design, noting the RthJC value of 0.31 K/W per module. Verify that the gate trigger requirements fit the driving circuit capabilities, specifically considering the maximum gate voltage limits at various temperatures.

Part Context

This part belongs to the IRK.26 series of thyristor/diode and thyristor/thyristor modules manufactured by International Rectifier (Infineon). The series utilizes the ADD-A-pak Gen V power module format, which is fully compatible with the TO-240AA footprint. The series offers voltage ratings ranging from 400V to 1600V.

Replacement Considerations

IRKN26/14AS90PBF

FAQ

What is the difference between IRKT26/14A and IRKT26/14AS90?

The IRKT26/14AS90 variant features a higher critical rate of rise (dv/dt) of 1000 V/µs compared to the standard 500 V/µs found in the IRKT26/14A.

How is the electrical terminal secured in this module?

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