The SEMIKRON SKKT25/08 is a dual SCR thyristor module delivering 25A average on-state current (IT(AV)) and an 800V repetitive peak off-state voltage (VDRM/VRRM). Built on SEMIKRON's established SKKT platform, the module integrates two thyristors in a common base isolated package, reducing component count and simplifying thermal management. With a robust isolated copper base and industry-standard mounting footprint, the SKKT25/08 is engineered for reliable operation in demanding industrial power conversion environments where controlled turn-on and high blocking voltage capability are essential.

The SKKT25/08 is widely deployed in three-phase half-wave and full-wave controlled rectifier circuits, DC motor drive front ends, soft-starter assemblies, and resistance heating controllers. It is also found in UPS input stage converters, welding power supplies, and crane and hoist drive systems where precise phase-angle control of AC input power is required. The module's isolated base plate allows direct mounting to a heatsink without additional isolation hardware, making it a practical choice for OEM panel builders and field retrofit engineers working within tight enclosure constraints.

Quick Reference: SKKT25/08

Key Features of the SKKT25/08:

• Dual SCR configuration in a single SKKT package — supports common-cathode or common-anode topologies for flexible circuit design
• 800V VDRM/VRRM blocking voltage with high dV/dt immunity suited for line-connected applications on 380–480VAC systems
• 25A IT(AV) per thyristor with low on-state voltage drop (VT), minimizing conduction losses in continuous duty cycles
• Electrically isolated copper base plate (2500V isolation test voltage) enabling direct heatsink mounting without additional insulating hardware
• Integrated gate connections with defined gate trigger current (IGT) and holding current (IH) parameters compatible with standard SCR firing cards
• Compact, industry-standard SKKT footprint ensuring dimensional interchangeability with legacy SEMIKRON and equivalent third-party modules

The SKKT25/08 carries a factory lead time of approximately 34 weeks for new production, a reality that reflects broader supply chain pressures on industrial thyristor modules. For maintenance operations and unplanned equipment failures, that timeline is simply not acceptable. ATI Accurate Technology actively maintains sourcing relationships for exactly these situations — tracking distributor inventory, excess stock channels, and pull-from-service units globally to locate new OEM SEMIKRON modules when standard channels fall short. Early engagement is strongly recommended; if a drive or rectifier system depends on this part, begin procurement well ahead of anticipated need.

ATI Accurate Technology is headquartered in Palmetto, Florida, and ships power semiconductor modules same-day on orders received before 5PM EST. Our team works directly with maintenance engineers and procurement professionals to provide fast quotes, volume pricing, and reliable sourcing for SEMIKRON thyristor modules including long lead time and hard-to-find parts. Call us at 239-734-7566 or email sales@igbts.us to check current availability on the SKKT25/08.