The SKKT19/12D is a SEMIKRON dual thyristor (SCR) module combining two SCR elements in a single isolated package, rated for 19A average on-state current and 1200V repetitive peak off-state voltage (VDRM/VRRM). Built to SEMIKRON's established SKKT platform, this module delivers low thermal resistance and a press-fit base plate designed for direct mounting to standard heat sinks. It is engineered for demanding phase-control and line-commutated converter applications where reliability, consistent gate sensitivity, and robust voltage blocking are non-negotiable requirements.

The SKKT19/12D is widely deployed in industrial AC/DC converters, three-phase rectifier bridges, DC motor drives, soft starters, power supplies, and heating control systems. Its dual SCR configuration reduces component count and wiring complexity in anti-parallel or series circuit topologies. Industries relying on this module include process automation, crane and hoist drives, marine propulsion auxiliary systems, plastics extrusion machinery, and industrial welding equipment — anywhere that controlled rectification or AC power switching demands a proven, thermally efficient thyristor solution.

Quick Reference: SKKT19/12D

Key Features of the SKKT19/12D:

• Dual SCR (thyristor) elements in one isolated module package, enabling anti-parallel or series configurations without external isolation hardware
• 1200V VDRM/VRRM blocking voltage with 19A IT(AV) rating, suitable for 480V–600V three-phase line-commutated converter topologies
• Low thermal resistance (RthJC) from junction to case, maximizing current capability for a given heat sink thermal impedance
• Isolated copper base plate with standard SKKT footprint for direct bolt-down mounting to extruded or liquid-cooled heat sinks
• Gate trigger parameters optimized for compatibility with standard SCR gate driver circuits and firing cards used in industrial drive systems
• Manufactured to SEMIKRON's stringent quality standards, ensuring lot-to-lot consistency in threshold voltage, holding current, and surge current (ITSM) ratings

The SKKT19/12D carries a factory lead time of approximately 27 weeks for new production orders — a reality familiar to procurement teams managing aging drive systems or executing capital projects. When production schedules cannot absorb that delay, sourcing from a specialized distributor becomes critical. ATI Accurate Technology maintains relationships and inventory pipelines specifically targeting long-lead-time and hard-to-find SEMIKRON thyristor modules. Whether you need a single replacement unit to return a production line to service or a scheduled quantity for a fleet retrofit, ATI can often bridge the gap that factory lead times cannot.

ATI Accurate Technology is headquartered in Palmetto, Florida, and stocks power semiconductors for immediate and scheduled shipment. Orders received before 5PM EST ship same day. For the SKKT19/12D or any SEMIKRON thyristor module, contact our team directly at 239-734-7566 or sales@igbts.us. Volume pricing is available — let us know your quantity and project timeline and we will work to meet your delivery and budget requirements.