The IRKT26/12 is a thyristor-diode (SCR-diode) power module manufactured by International Rectifier (IR), rated for 26A continuous current and 1200V repetitive peak off-state voltage. This half-controlled module pairs a fast thyristor with a freewheeling diode in a single compact package, reducing external component count and simplifying PCB or heatsink layouts. It is engineered for high-reliability performance in demanding industrial environments, offering low on-state voltage drop, robust surge current capability, and a thermally efficient base plate for direct heatsink mounting.

The IRKT26/12 is well-suited for AC-DC phase-controlled rectifier circuits, soft-start motor drive front ends, DC bus pre-charge systems, and regenerative braking applications. It sees widespread use in variable speed drives, industrial welding equipment, UPS systems, crane and hoist drives, and heating control systems. The integrated freewheeling diode makes it a natural fit for inductive load control where continuous current paths are required during the off-state of the thyristor, reducing switching stress and improving overall system efficiency.

Quick Reference: IRKT26/12

Key Features of the IRKT26/12:

• 26A average on-state current (IT(AV)) with 1200V repetitive peak off-state voltage (VDRM/VRRM)
• Integrated freewheeling diode eliminates need for external flyback diode in inductive load circuits
• Low on-state voltage drop (VT) minimizes conduction losses and thermal stress at rated current
• High non-repetitive surge current (ITSM) rating supports robust overcurrent event tolerance
• Isolated copper base plate with standard module footprint enables direct heatsink mounting and straightforward mechanical integration
• Gate trigger requirements compatible with standard SCR gate drive circuits, simplifying retrofit and replacement design work

With a current factory lead time of 99 weeks, the IRKT26/12 presents a serious procurement challenge for maintenance teams managing unplanned downtime or capital project timelines. International Rectifier's absorption into Infineon Technologies has further complicated the availability of legacy IR module part numbers, with some configurations being consolidated or discontinued entirely. Facilities relying on installed equipment built around the IRKT26/12 cannot afford to wait nearly two years for factory delivery. Securing in-stock inventory from a stocking distributor is the only reliable path to keeping critical systems operational.

ATI Accurate Technology, based in Palmetto, FL, stocks the IRKT26/12 and ships same-day on orders received before 5PM EST. We specialize in hard-to-find, long-lead-time, and obsolete power semiconductors including IGBTs, thyristors, diodes, and rectifier modules. Volume pricing is available for MRO stockpiles and OEM build requirements. Contact our team directly at 239-734-7566 or sales@igbts.us to confirm availability and receive a quote.