The SANREX PK70FG120 is a thyristor/diode combination power module rated for 70 amperes continuous current and 1200V repetitive peak off-state voltage. Designed for phase-controlled rectification and AC/DC conversion, it integrates a thyristor and diode element within a single isolated baseplate package, reducing board complexity and improving thermal management. This module meets demanding industrial performance requirements, offering high surge current capability, low thermal resistance junction-to-case, and robust gate trigger characteristics suited for controlled power delivery in high-voltage environments.

The PK70FG120 is well-suited for industrial DC motor drives, soft-start controllers, AC power regulators, and battery charging systems operating on three-phase or single-phase mains. It is commonly found in crane and hoist drives, extruder controls, pump and compressor drives, and welding power supplies. The module's 1200V blocking voltage provides adequate margin for 480V and 600V mains applications, while the 70A current rating supports mid-range drive platforms without paralleling. It is also used in UPS systems and power factor correction circuits requiring controlled rectification stages.

Quick Reference: PK70FG120

Key Features of the PK70FG120:

• 1200V repetitive peak off-state voltage (VDRM/VRRM) providing robust margin on 480V and 600V three-phase systems
• 70A average on-state current (IT(AV)) in a compact single-module footprint for mid-range drive applications
• Integrated thyristor and diode in one isolated baseplate package, simplifying heatsink mounting and reducing assembly time
• Low thermal resistance junction-to-case (Rth(j-c)) for efficient heat dissipation under continuous high-load conditions
• High repetitive peak on-state current (ITSM) capability to withstand inrush and fault current events without device failure
• Industry-standard gate trigger specifications compatible with common firing board circuits used in legacy and current drive platforms

The PK70FG120 was discontinued by SANREX and carries a factory lead time of 99 weeks for any new production run — effectively making spot inventory the only practical sourcing path for maintenance, repair, and OEM replenishment. Engineers supporting installed equipment cannot afford multi-year procurement delays when a drive goes down. Securing verified new OEM stock from a trusted distributor is the correct strategy. Attempting to substitute with unspecified equivalents in phase-controlled applications risks mismatched gate characteristics, thermal performance, or voltage margin, all of which can cause repeat failures.

ATI Accurate Technology in Palmetto, Florida stocks the PK70FG120 as a new OEM unit ready for same-day shipment on orders placed before 5PM EST. We specialize in obsolete and long-lead-time power semiconductors including IGBTs, thyristors, diodes, and rectifier modules. Volume pricing is available for MRO stockers and OEM customers. Contact our team today at 239-734-7566 or sales@igbts.us to confirm availability and request a quote.