The Semikron SKKT56/16E is a dual SCR (thyristor) module configured in a common-cathode arrangement, rated for 56A average on-state current (IT(AV)) and a 1600V repetitive peak off-state voltage (VDRM/VRRM). Housed in Semikron's compact, industry-proven SKKT power package, this module features an isolated copper base plate for efficient heatsink mounting and stable thermal performance. It is engineered for high-reliability phase-control and soft-start applications where robust blocking voltage margins and consistent gate trigger characteristics are non-negotiable requirements.

The SKKT56/16E is widely deployed in industrial AC motor drive front-ends, DC motor speed controllers, resistance welding equipment, crane and hoist drives, UPS systems, and electrochemical process rectifiers. Its 1600V voltage class provides adequate margin for 690V three-phase bus applications, and the dual SCR topology simplifies bridge rectifier construction, reducing component count and assembly complexity. Maintenance engineers replacing aging phase-control bridge assemblies will find the SKKT56/16E a direct fit for a broad range of legacy and current-generation industrial power conversion platforms.

Quick Reference: SKKT56/16E

Key Features of the SKKT56/16E:

• Dual SCR common-cathode configuration simplifies three-phase controlled rectifier bridge design
• 1600V VDRM/VRRM rating provides robust voltage margin for 690V AC bus and high-transient industrial environments
• 56A IT(AV) continuous current rating with low on-state voltage drop (VT) for reduced conduction losses
• Isolated copper base plate enables direct heatsink mounting with excellent thermal conductivity and electrical isolation
• Industry-standard SKKT footprint ensures mechanical and electrical interchangeability across Semikron's thyristor module family
• Characterized for phase-control duty with defined gate trigger current (IGT) and holding current (IH) for predictable firing behavior

The SKKT56/16E carries a factory lead time of approximately 34 weeks for new production from Semikron, placing it firmly in the long-lead-time category that can stall critical repair and retrofit projects. ATI Accurate Technology maintains active sourcing channels for exactly this class of hard-to-find power semiconductor module. Whether you are managing a planned maintenance outage or responding to an unscheduled equipment failure, our procurement team can assess current inventory, locate verified new-OEM stock, and provide rapid qualification support to keep your timeline on track.

ATI Accurate Technology is located in Palmetto, Florida, and ships same-day on orders placed before 5:00 PM EST. We specialize in IGBTs, thyristors, diodes, and rectifier modules — including obsolete and long-lead-time parts the major distributors can't deliver. Call us at 239-734-7566 or email sales@igbts.us for pricing, availability, and volume discounts on the SKKT56/16E and the full Semikron thyristor module line.