The SEMIKRON SKKH72/22EH4 is a thyristor/diode combination module from the SKKH series, rated at 72A average on-state current and a 2200V repetitive peak off-state voltage (VDRM/VRRM). Housed in SEMIKRON's industry-standard SEMIPACK® package with an electrically isolated copper baseplate, this module integrates a phase-control thyristor and a freewheeling diode in a single assembly. The design simplifies half-wave and semi-controlled bridge rectifier topologies while reducing component count, thermal interface complexity, and overall system footprint in high-voltage power conversion equipment.

The SKKH72/22EH4 is well suited for industrial DC drive systems, soft starters, AC power controllers, field excitation circuits, and regenerative braking applications. Its robust construction and high blocking voltage make it a preferred choice in steel and mining equipment, crane and hoist drives, paper and textile machinery, and industrial heating systems where reliable phase control under sustained load is critical. The module's isolated baseplate supports direct mounting to a heatsink without additional insulation hardware, streamlining integration into existing drive and converter assemblies.

Quick Reference: SKKH72/22EH4

Key Features of the SKKH72/22EH4:

• 72A average on-state current with 2200V VDRM/VRRM blocking voltage for high-voltage phase-control applications
• Thyristor/diode co-pack configuration optimized for semi-controlled bridge and half-wave rectifier circuits
• SEMIPACK® package with electrically isolated, direct-mount copper baseplate for simplified heatsink assembly
• Low thermal resistance junction-to-case (RthJC) enabling high power density in space-constrained enclosures
• Gate trigger current and latching current characteristics suited for industrial phase-control firing circuits
• Compliant with SEMIKRON's EH4 specification variant, ensuring dimensional and electrical interchangeability within the SKKH72 family

The SKKH72/22EH4 carries a factory lead time of approximately 37 weeks for new production orders, placing it firmly in the long-lead-time category that can halt equipment repairs and new builds alike. Procurement teams supporting aging drive platforms or managing MRO inventories for SEMIKRON-based systems need a reliable distributor with deep sourcing networks. ATI Accurate Technology actively tracks availability across authorized channels and secondary market sources, offering engineers and buyers a single point of contact for difficult-to-procure SEMIKRON thyristor and diode modules without compromising on part authenticity or traceability.

ATI Accurate Technology is based in Palmetto, Florida and stocks a broad inventory of SEMIKRON power modules, IGBTs, thyristors, and rectifier assemblies. We ship same-day on orders placed before 5PM EST and offer volume pricing for MRO and OEM procurement programs. Reach our power electronics specialists directly at 239-734-7566 or sales@igbts.us for real-time availability, lead time updates, and competitive quotes on the SKKH72/22EH4 and related SEMIKRON product lines.