The SEMIKRON SKKT27/12E is a dual SCR (thyristor) power module configured in an inverse-parallel arrangement, rated for 27A average on-state current (IT(AV)) and a 1200V repetitive peak off-state voltage (VDRM/VRRM). Built in SEMIKRON's proven SEMIPACK 1 housing, the module integrates an isolated base plate for simplified heatsink mounting and reduced assembly complexity. With a low thermal resistance junction-to-case and robust gate trigger characteristics, the SKKT27/12E is engineered for consistent phase-control performance across wide temperature and load variations in industrial power conversion equipment.

The SKKT27/12E is widely deployed in AC power controllers, soft-start units, resistance welding equipment, heating and temperature control systems, and DC drive front-ends where reliable, phase-controlled rectification is essential. Its dual inverse-parallel thyristor topology makes it directly applicable to single-phase AC switching and three-phase bridge configurations. Industries including steel processing, plastics extrusion, HVAC, and material handling rely on this module family for long-service-life operation in continuous-duty converter cabinets and regenerative drive systems where field-replaceable power modules are critical to uptime.

Quick Reference: SKKT27/12E

Key Features of the SKKT27/12E:

• Dual inverse-parallel SCR configuration enables bidirectional AC current control in a single compact module footprint
• 1200V VDRM/VRRM blocking voltage provides substantial margin for line transient events on 480V and 690V AC systems
• 27A average on-state current rating with low on-state voltage drop (VT) minimizes conduction losses in continuous phase-control operation
• Isolated copper base plate (2.5kV isolation) simplifies heatsink integration and meets creepage/clearance requirements in enclosed drive cabinets
• SEMIPACK 1 package format ensures direct form, fit, and function interchangeability with legacy and current-generation SEMIKRON SKKT series modules
• Defined gate trigger current (IGT) and holding current (IH) parameters support straightforward firing circuit design with standard SCR gate drivers

With a factory lead time of 28 weeks for new production, the SKKT27/12E presents a real sourcing challenge for maintenance teams dealing with unplanned equipment failures or procurement teams managing MRO inventory. SEMIKRON's SEMIPACK thyristor modules have been produced across multiple product generations, and identifying verified, new-condition stock requires a distributor with deep supply chain reach. ATI Accurate Technology actively sources long lead time and allocation-constrained SEMIKRON components, helping customers bridge the gap between factory lead times and operational demands without resorting to unverified gray-market supply.

ATI Accurate Technology is headquartered in Palmetto, Florida and stocks power semiconductors for same-day shipping on orders placed before 5PM EST. Whether you need a single replacement module or volume pricing for a scheduled maintenance program, our team is ready to help. Contact ATI at 239-734-7566 or sales@igbts.us for real-time availability, lead time updates, and competitive pricing on the SKKT27/12E and the full SEMIKRON thyristor module line.