The SEMIKRON SKKT122/16E is a dual thyristor (SCR) module configured in a common cathode arrangement, rated for 122A average on-state current and a 1600V repetitive peak off-state voltage (VDRM/VRRM). Built on SEMIKRON's proven SEMIPAK platform, this module incorporates an isolated copper base plate for efficient thermal management and simplified heatsink mounting. It is designed for high-reliability operation in demanding industrial power conversion environments where voltage transient ruggedness and consistent gate triggering characteristics are critical to system uptime.

The SKKT122/16E is widely deployed in three-phase bridge rectifiers, soft starters, AC power controllers, DC motor drives, and regenerative braking systems. It is also found in welding power supplies, induction heating equipment, UPS systems, and crane or hoist drive controllers. Any application requiring controlled rectification or phase-angle power regulation at medium-to-high power levels is a natural fit for this module. Its robust construction and SEMIKRON's established gate trigger specifications make it a reliable choice for OEM designs and MRO replacement applications alike.

Quick Reference: SKKT122/16E

Key Features of the SKKT122/16E:

• Dual SCR common cathode configuration — simplifies three-phase half-wave and full-wave bridge circuit design
• 1600V VDRM/VRRM rating — provides substantial voltage margin for line transient protection in 690VAC systems
• 122A IT(AV) per thyristor — suited for medium-power industrial drives and converter stages without paralleling
• Isolated aluminum oxide (Al₂O₃) base plate — enables direct mounting to standard heatsinks with full electrical isolation from the chassis
• Low gate trigger current (IGT) and well-defined dV/dt and di/dt ratings — ensures reliable triggering from standard SCR gate driver circuits
• SEMIPAK package with industry-standard footprint — direct form, fit, and function replacement for legacy system refurbishment

SEMIKRON's SKKT122/16E carries a factory lead time of approximately 34 weeks for new production orders, a reality that creates serious risk for maintenance and production schedules. Systems built around this module — many of which have been in service for a decade or more — depend on timely parts availability to avoid costly downtime. ATI Accurate Technology actively sources long lead time, allocated, and obsolete SEMIKRON thyristor modules through authorized and verified supply channels, helping procurement teams bridge the gap between factory lead times and operational demand.

ATI Accurate Technology is located in Palmetto, Florida, and stocks a broad inventory of SEMIKRON thyristor modules, IGBTs, diodes, and rectifier assemblies. Orders placed before 5PM EST ship same day when stock is confirmed. Contact our power semiconductor specialists for current availability, volume pricing, and cross-reference support on the SKKT122/16E. Call 239-734-7566 or email sales@igbts.us — we're ready to support both emergency replacement and planned procurement programs.