The SEMIKRON SKKT56/14D is a dual thyristor (SCR) module configured in a non-isolated base package, rated for 56A average on-state current (IT(AV)) and a 1400V repetitive peak off-state voltage (VDRM/VRRM). Designed for phase-controlled rectifier and AC controller topologies, this module delivers robust gate triggering characteristics and low on-state voltage drop, making it well suited for demanding industrial environments where thermal performance and switching reliability are non-negotiable. The SKKT package format is a well-established SEMIKRON platform with a proven track record across global drive and power supply installations.

The SKKT56/14D sees broad use across industrial AC drives, soft starters, DC motor controllers, battery chargers, welding power supplies, and crane and hoist drive systems. Its dual SCR topology enables straightforward implementation of three-phase half-wave or single-phase full-wave controlled rectifier bridges when combined with diode modules. Power conversion engineers also deploy this device in UPS systems, excitation control for generators, and electrochemical process equipment where precise thyristor firing control and high-voltage blocking capability are essential to system stability and efficiency.

Quick Reference: SKKT56/14D

Key Features of the SKKT56/14D:

• 56A average on-state current (IT(AV)) with high surge current (ITSM) capability for robust fault tolerance in demanding load cycles
• 1400V VDRM/VRRM voltage class providing adequate margin in 480V–690V three-phase industrial systems with transient overvoltage exposure
• Dual SCR (thyristor) topology in a single compact module, reducing PCB footprint and bus bar complexity versus discrete device assemblies
• Low on-state voltage drop (VT) minimizes conduction losses and thermal stress on the heatsink in continuous duty applications
• Standard SKKT package with industry-compatible bolt-down mounting pattern, enabling drop-in replacement across a wide range of OEM equipment platforms
• Isolated or non-isolated base options within the SKKT series allow design flexibility depending on heatsink grounding requirements

The SKKT56/14D carries a factory lead time of approximately 31 weeks for new production from SEMIKRON, placing it firmly in the long lead time category that can create serious challenges for maintenance teams and OEM production schedules alike. Equipment downtime cannot always wait for new factory builds, and single-source procurement strategies often leave facilities exposed. ATI Accurate Technology actively tracks market availability for long lead time and hard-to-find SEMIKRON thyristor modules, giving procurement professionals an alternative path to keeping critical systems operational without extended delays.

ATI Accurate Technology is based in Palmetto, Florida and stocked to support urgent power semiconductor requirements across North America. We ship same-day on orders placed before 5PM EST and offer volume pricing for MRO and production quantities. For current availability on the SKKT56/14D or any SEMIKRON thyristor module, contact our team directly at 239-734-7566 or sales@igbts.us. Our specialists understand power electronics and are ready to help you find the right part fast.