The SKKT15/12 is a dual thyristor (SCR) module from SEMIKRON's SEMIPACK1 series, rated for 15A average on-state current and a 1200V repetitive peak off-state voltage (VDRM/VRRM). Built for phase-controlled rectification and AC power regulation, this module integrates two thyristors in a common cathode or antiparallel configuration within a single isolated base package. The low-profile SEMIPACK1 housing simplifies heatsink mounting and system integration, making it a go-to building block for engineers designing compact, thermally efficient power conversion equipment.

The SKKT15/12 is widely deployed in industrial motor soft-starters, three-phase bridge rectifiers, DC drives, crane and hoist controls, heating element regulators, and UPS input stages. Its robust 1200V blocking voltage provides adequate margin in 480V AC line applications, while the 15A current rating suits low-to-medium power control circuits. The module is also found in legacy CNC machine tool drives, textile machinery, and process control systems where SEMIKRON SEMIPACK components have been the standard for decades.

Quick Reference: SKKT15/12

Key Features of the SKKT15/12:

• 1200V VDRM/VRRM repetitive peak off-state voltage — suitable for 480V three-phase line applications with standard derating margins
• 15A average on-state current (IT(AV)) with defined surge current (ITSM) capability for transient overload tolerance
• Dual SCR configuration in a single SEMIPACK1 package enabling compact half-wave or full-wave bridge circuit construction
• Isolated copper base plate for direct heatsink mounting, simplifying thermal management in space-constrained enclosures
• Gate trigger specifications compatible with standard SCR firing boards and phase-control ICs used in industrial drive platforms
• Designed to SEMIKRON's established SEMIPACK1 footprint, ensuring mechanical interchangeability with prior-generation designs

With a factory lead time of 33 weeks for new production, the SKKT15/12 presents a genuine sourcing challenge for maintenance teams facing unplanned equipment downtime or procurement teams managing MRO inventory. SEMIKRON SEMIPACK modules like this one appear throughout installed base equipment that is often still years from end-of-life, making reliable access to these components critical. ATI Accurate Technology actively stocks and sources long-lead-time and hard-to-find SEMIKRON thyristor modules, working directly with authorized channels and trusted distribution networks to close the gap between factory lead times and your actual need date.

ATI Accurate Technology is headquartered 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 stocking program, our team is ready to help. Call us at 239-734-7566 or email sales@igbts.us for real-time availability, lead time updates, and volume pricing on the SKKT15/12 and the full SEMIKRON SEMIPACK product line.