The Semikron SKKT57/16E is a dual thyristor (SCR) module rated for 57A average on-state current and 1600V repetitive peak off-state voltage (VDRM/VRRM). Built in Semikron's established SEMIPACK topology, this module integrates two thyristors in a common cathode or common anode configuration, providing a complete half-controlled or full-controlled bridge building block in a single, isolated-base package. Its robust silicon construction and pressure-contact technology deliver consistent gate triggering characteristics, low on-state voltage drop, and reliable performance in continuous industrial duty cycles.

The SKKT57/16E is engineered for demanding industrial power electronics applications including AC motor soft starters, DC motor drives, three-phase controlled rectifiers, power supplies, and regenerative braking systems. Its 1600V voltage class provides adequate margin for 690V AC line applications where transient overvoltages are a recurring concern. The module is also deployed in crane and hoist controls, electrochemical process rectifiers, UPS systems, and resistance welding controllers where precise phase-angle control and high surge-current capability are essential operating requirements.

Quick Reference: SKKT57/16E

Key Features of the SKKT57/16E:

• Dual thyristor configuration in a single SEMIPACK module — reduces component count and simplifies PCB or busbar layout in bridge rectifier assemblies
• 1600V VDRM/VRRM voltage rating with high static dV/dt and dI/dt capability for robust operation on stiff industrial networks
• Isolated copper base plate enables direct heatsink mounting with standard thermal interface materials, simplifying thermal management design
• Low and consistent gate trigger current (IGT) and gate trigger voltage (VGT) for reliable firing across temperature extremes
• High non-repetitive surge current (ITSM) rating supports overcurrent events during system startup or fault conditions without device failure
• Industry-standard SEMIPACK footprint ensures drop-in compatibility with existing drive and rectifier platforms designed around Semikron module families

The SKKT57/16E carries a factory lead time of approximately 43 weeks for new production, a reality that reflects ongoing semiconductor supply chain constraints affecting power module availability globally. For maintenance engineers managing unplanned downtime or procurement teams building safety stock, waiting for new production is often not a viable option. ATI Accurate Technology specializes in sourcing long-lead-time, hard-to-find, and allocation-constrained Semikron modules. Contact us early to discuss scheduling, quantity holds, or bridging stock to keep your production and service operations running without interruption.

ATI Accurate Technology is headquartered in Palmetto, Florida and ships same-day on qualifying orders received before 5:00 PM EST. We stock IGBTs, thyristors, diodes, and rectifier modules from leading manufacturers including Semikron, and we specialize in parts that are difficult to source through standard distribution channels. Volume pricing is available. Call us at 239-734-7566 or email sales@igbts.us to request a quote, check current availability, or discuss your project requirements with our team.