The IRKT91/16S90-IR is a high-voltage IGBT module from International Rectifier rated at 91A continuous collector current and 1600V blocking voltage. Built for reliability in harsh industrial environments, this module integrates fast-switching IGBT technology with an optimized gate structure to minimize switching losses and reduce thermal stress on the package. The S90 package format provides a standardized mounting footprint compatible with widely used heatsink configurations, simplifying integration into existing power stage designs. This part is manufactured to OEM specifications and meets the performance demands of high-power switching applications.

The IRKT91/16S90-IR is well suited for AC motor drives, servo amplifiers, induction heating systems, UPS inverters, and industrial welding equipment. Its 1600V voltage rating provides adequate headroom for 690VAC bus architectures common in heavy industrial machinery, while the 91A current rating supports mid-to-high power drive topologies. Power conversion engineers working on traction systems, elevator drives, and renewable energy inverters will also find this module an appropriate fit where high blocking voltage and reliable switching performance at elevated temperatures are critical design requirements.

Quick Reference: IRKT91/16S90-IR

Key Features of the IRKT91/16S90-IR:

• 1600V collector-emitter voltage (VCES) providing robust margin for 690VAC three-phase bus applications
• 91A continuous collector current (IC) rated at case temperature for sustained high-power operation
• Low saturation voltage (VCE(sat)) reducing on-state conduction losses in high-duty-cycle inverter stages
• Integrated fast-recovery anti-parallel freewheeling diode optimized for hard-switching PWM topologies
• S90 industry-standard package with isolated baseplate for simplified heatsink mounting and electrical isolation
• Designed for switching frequencies compatible with industrial drive and inverter applications up to several kilohertz

With a published factory lead time of 99 weeks for new production, the IRKT91/16S90-IR presents a significant procurement challenge for maintenance teams managing unplanned downtime or engineers designing new systems with firm delivery commitments. International Rectifier parts in legacy S90 packaging are increasingly difficult to source through standard distribution channels as product lines mature or transition. Waiting on factory orders is rarely viable when a drive system is offline. ATI Accurate Technology maintains stock of hard-to-find IR IGBT modules specifically to bridge this gap and keep critical equipment running without extended delays.

ATI Accurate Technology is a power semiconductor distributor based in Palmetto, Florida, stocking IGBTs, thyristors, diodes, and rectifier modules including obsolete and long-lead-time parts. Orders placed before 5PM EST ship same day. Contact our team for volume pricing, cross-reference assistance, or urgent replacement needs. Call 239-734-7566 or email sales@igbts.us.