The SEMIKRON SKKT31/16E is a dual SCR (thyristor) power module delivering 31A average on-state current and a 1600V repetitive peak off-state voltage (VDRM/VRRM). Housed in SEMIKRON's industry-standard SKKT package, this module integrates two thyristors in a common-cathode or antiparallel configuration suitable for three-phase and single-phase AC power control circuits. Its isolated copper base plate and industry-compatible mounting footprint make it a straightforward drop-in solution for original equipment designs requiring robust, thermally efficient phase-control devices.

The SKKT31/16E sees widespread deployment across industrial power electronics, including three-phase controlled rectifiers, AC motor soft starters, DC drive systems, crane and hoist controls, induction heating equipment, and UPS front-end converters. Its 1600V blocking voltage rating provides meaningful headroom in 690V AC bus systems where line transients and commutation spikes must be absorbed without device turn-on. Power conversion OEMs and industrial MRO teams routinely specify this module in applications where long service life, predictable gate drive characteristics, and thermal reliability are non-negotiable requirements.

Quick Reference: SKKT31/16E

Key Features of the SKKT31/16E:

• Dual SCR configuration in a single SKKT package — reduces BOM complexity and simplifies PCB or busbar layout in three-phase bridge topologies
• 1600V VDRM/VRRM rating provides robust transient margin for 480V and 690V AC input systems with high di/dt line environments
• 31A IT(AV) per thyristor element with low on-state voltage drop (VT), minimizing conduction losses and thermal stress at rated load
• Electrically isolated copper base plate enables direct mounting to heatsink without additional isolation hardware, simplifying thermal management
• Gate trigger characteristics optimized for standard phase-control firing circuits, compatible with conventional pulse transformer and optocoupler gate drive designs
• SEMIKRON SKKT package footprint is widely adopted across industrial drive platforms, ensuring form-fit-function interchangeability with legacy system designs

With a factory lead time of approximately 39 weeks for new production, the SKKT31/16E presents a real procurement challenge for maintenance teams managing unplanned downtime or production schedules that cannot absorb multi-month delays. SEMIKRON thyristor modules at this voltage and current class are increasingly constrained through standard distribution channels. ATI Accurate Technology actively maintains sourcing relationships and inventory pipelines for exactly these long lead time and hard-to-find SEMIKRON devices — contact us early to lock in availability before a critical outage forces an emergency search.

ATI Accurate Technology is headquartered in Palmetto, Florida, and ships power semiconductors same-day on orders placed before 5PM EST. We stock IGBTs, thyristors, diodes, and rectifier modules from leading manufacturers including SEMIKRON. Call us at 239-734-7566 or email sales@igbts.us for real-time availability, lead time updates, and volume pricing on the SKKT31/16E and related SEMIKRON thyristor modules.