The Sanrex PK90FG80 is a thyristor/diode combination module engineered for demanding phase-control and rectification applications in industrial power conversion systems. Rated at 90A continuous current and 800V repetitive peak off-state voltage, the PK90FG80 integrates a thyristor and diode in a compact, thermally efficient package. This module configuration simplifies circuit layout, reduces external component count, and is well-suited for designs requiring controlled AC-to-DC conversion or half-wave phase control in medium-power drive and power supply systems.

The PK90FG80 sees broad deployment across variable speed AC and DC motor drives, industrial heating controllers, elevator and crane drive systems, welding power supplies, and UPS rectifier stages. Its hybrid thyristor/diode topology makes it a natural fit for half-controlled bridge configurations in three-phase and single-phase front-end converters. Field engineers replacing aging drive modules, as well as OEM service teams maintaining legacy equipment platforms, rely on this part to keep production lines and critical infrastructure operational without redesign.

Quick Reference: PK90FG80

Key Features of the PK90FG80:

• 90A RMS on-state current rating suitable for medium-power industrial converter stages
• 800V repetitive peak off-state voltage (VDRM/VRRM) providing robust margin in 480V three-phase systems
• Integrated thyristor and diode in a single isolated-base module package, reducing PCB footprint and assembly complexity
• Isolated copper base plate for direct heatsink mounting, enabling efficient thermal management in high-cycle-rate applications
• Gate trigger characteristics optimized for standard phase-control firing circuits and industrial gate drive boards
• Designed to Sanrex's industrial-grade process standards, consistent with long-service-life requirements in harsh environments

The PK90FG80 has been discontinued by Sanrex, with any new production factory lead time quoted at 99 weeks — effectively rendering standard procurement channels unreliable for urgent needs. For maintenance teams supporting legacy drives, OEM service depots, and production facilities that cannot afford extended downtime, locating genuine new-stock inventory is the only practical path. Procurement professionals sourcing this part through distribution or direct channels will find it largely unavailable, making specialized obsolete and long-lead-time distributors the critical link in keeping this equipment operational.

ATI Accurate Technology, based in Palmetto, Florida, stocks the PK90FG80 and ships same-day on orders placed before 5PM EST. ATI specializes in hard-to-find, obsolete, and long-lead-time power semiconductors including IGBTs, thyristors, diodes, and rectifier modules. Volume pricing is available for MRO stocking orders and OEM service requirements. Contact our team today at 239-734-7566 or sales@igbts.us to confirm availability and pricing.