The SEMIKRON SKKT210/18E is a dual SCR (thyristor) power module delivering 210A average on-state current and a 1800V repetitive peak off-state voltage (VDRM/VRRM). Built on SEMIKRON's proven SEMIPACK platform, the module integrates two thyristors in a common isolated base configuration, simplifying heatsink mounting and bus-bar connections. With a low thermal resistance junction-to-case and high surge current rating (ITSM), the SKKT210/18E is engineered for continuous, high-reliability operation in demanding AC/DC power conversion systems.

The SKKT210/18E is widely deployed across heavy industrial and infrastructure applications where rugged, high-voltage rectification and phase control are required. Typical uses include three-phase fully controlled bridge rectifiers, DC motor soft starters, crane and hoist drives, induction heating systems, UPS input stages, and electrochemical process rectifiers. Its 1800V voltage class provides essential margin in 690VAC line-connected systems, and the isolated base package simplifies thermal management in multi-module power stack assemblies used throughout the metals, mining, marine, and oil and gas industries.

Quick Reference: SKKT210/18E

Key Features of the SKKT210/18E:

• 210A average on-state current (IT(AV)) with high ITSM surge current capability for fault-tolerant converter designs
• 1800V VDRM/VRRM rating providing necessary voltage margin for 690VAC three-phase line applications
• Dual SCR topology in a single SEMIPACK module, enabling compact fully controlled bridge or anti-parallel configurations
• Isolated copper base plate for direct heatsink mounting, minimizing thermal resistance and simplifying mechanical integration
• Low on-state voltage drop (VT) reduces conduction losses and heat dissipation in continuous-duty power conversion systems
• Compatible with standard SEMIKRON SEMIPACK mounting hardware and gate driver accessories, streamlining field replacement and spare parts management

With a factory lead time of approximately 40 weeks for new production, the SKKT210/18E presents a real procurement challenge for facilities running planned maintenance schedules or recovering from unplanned equipment failures. SEMIKRON's SEMIPACK thyristor modules are widely embedded in legacy drive systems that remain in service well beyond original design lifespans, making timely sourcing critical. ATI Accurate Technology maintains active sourcing channels for long-lead-time and hard-to-find SEMIKRON components, and our team can often locate verified stock or near-term availability that bypasses standard factory queues.

ATI Accurate Technology is headquartered in Palmetto, Florida and stocks a broad range of power semiconductors including thyristors, IGBTs, diodes, and rectifier modules. Orders placed before 5PM EST ship same day when stock is on hand. For the SKKT210/18E or any long-lead SEMIKRON part, call us at 239-734-7566 or email sales@igbts.us. Volume pricing and blanket order programs are available for MRO and OEM customers.