IRKT26/14A

SCRs - Modules 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.

SCRs - Modules 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

SCRs - Modules Applications

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

SCRs - Modules 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.

SCRs - Modules 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.

SCRs - Modules 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.

SCRs - Modules Replacement Considerations

IRKN26/14AS90PBF

SCRs - Modules 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.