The SEMIKRON SKT340/18E is a high-current, high-voltage thyristor module from the proven SKT series, delivering 340A average on-state current (IT(AV)) and a 1800V repetitive peak off-state voltage (VDRM/VRRM). Engineered for phase-control and line-commutated converter topologies, this module combines a robust isolated base with low thermal resistance and dependable triggering characteristics. Its compact stud-mount construction simplifies integration into existing drive cabinets and power conversion assemblies where space and thermal management are both critical considerations.

The SKT340/18E is well-suited for industrial AC motor soft starters, DC motor drives, crane and hoist controls, resistance heating controllers, electrochemical rectifier banks, and utility-scale power regulation systems. It is a standard selection in applications requiring controlled rectification at medium-to-high power levels — particularly where retrofit compatibility with existing SEMIKRON SKT footprints is required. The 1800V voltage class provides adequate blocking margin for 690V and 1000V AC supply networks operating under transient conditions common in heavy industrial environments.

Quick Reference: SKT340/18E

Key Features of the SKT340/18E:

• 340A average on-state current (IT(AV)) supporting high-power phase-control converter designs
• 1800V VDRM/VRRM blocking voltage class with surge current (ITSM) capability suited for industrial transient environments
• Isolated copper base plate for direct heatsink mounting with low junction-to-case thermal resistance
• Standard SKT module footprint ensuring drop-in mechanical and electrical compatibility with legacy SEMIKRON installations
• Gate trigger characteristics optimized for reliable firing across a wide temperature range in continuous-duty operation
• Designed to IEC and EN semiconductor standards applicable to industrial drive and power conversion equipment

With a factory lead time of 43 weeks for new production, the SKT340/18E presents a real procurement challenge for maintenance teams managing unplanned downtime or engineers sourcing parts for new builds on tight schedules. SEMIKRON's SKT series modules are widely embedded in aging infrastructure across industries, making them both essential and increasingly difficult to procure through standard distribution channels. ATI Accurate Technology specializes in exactly these scenarios — long lead time, hard-to-find, and production-discontinued power semiconductors — with active sourcing efforts to locate genuine OEM inventory when standard channels fall short.

ATI Accurate Technology is based in Palmetto, Florida, and ships same-day on orders placed before 5PM EST. Whether you need a single replacement module or volume quantities for a scheduled maintenance program, our team is ready to support you. Call us at 239-734-7566 or email sales@igbts.us for a fast quote, lead time update, or volume pricing on the SKT340/18E and related SEMIKRON thyristor modules.