The SEMIKRON SKKT105/12E is a dual SCR (thyristor) power module delivering 105A average on-state current and a 1200V repetitive peak off-state voltage (VDRM/VRRM). Housed in the industry-proven SKKT flat-base package, this module features an isolated copper base plate for efficient heat transfer to standard heatsinks. Its internal dual-thyristor configuration simplifies circuit design for phase-controlled bridge topologies, and the device is built to SEMIKRON's rigorous quality standards for long-term reliability in continuous-duty industrial environments.

The SKKT105/12E is widely deployed in industrial AC motor drives, DC motor speed controllers, soft starters, regenerative drives, and three-phase fully controlled bridge rectifiers. It is also found in UPS systems, electrochemical processing equipment, induction heating power supplies, and crane and hoist drive systems where precise phase-angle control and rugged thermal cycling performance are essential. The 1200V voltage class provides the headroom required for 480V and 690V three-phase mains with adequate transient margin.

Quick Reference: SKKT105/12E

Key Features of the SKKT105/12E:

• Dual SCR configuration in a single module — ideal for fully controlled single-phase or half-controlled three-phase bridge circuits without external device matching
• 1200V VDRM/VRRM voltage class provides robust transient immunity on 480V and 690V industrial networks per IEC and NEMA drive standards
• 105A IT(AV) continuous on-state current rating with a high surge current (ITSM) capability suitable for fault-withstand and inrush conditions
• Isolated copper base plate construction ensures low thermal resistance (Rth(j-c)) and compatibility with industry-standard SKKT-footprint heatsink assemblies
• Low gate trigger current (IGT) and well-defined holding current (IH) parameters enable reliable triggering from standard SCR gate driver and firing board circuits
• SEMIKRON SKKT package footprint offers direct mechanical and electrical interchangeability with previous SKKT-series generations for retrofit and repair applications

With a factory lead time of 32 weeks for new production, the SKKT105/12E presents a significant procurement challenge for plant maintenance teams facing unplanned drive failures or scheduled outages. Long lead times on SEMIKRON thyristor modules are common across the industry due to wafer-level production scheduling and specialized packaging processes. ATI Accurate Technology maintains an active sourcing network for exactly these situations — whether you need a single replacement module for emergency repair or a scheduled buffer stock quantity, our team can provide verified, new OEM product with full traceability. Do not let a 32-week lead time dictate your downtime window.

ATI Accurate Technology is headquartered in Palmetto, Florida and stocks a broad range of SEMIKRON thyristor modules, IGBTs, diodes, and rectifier assemblies. Orders placed before 5PM EST ship same day. For pricing, availability, and volume discount inquiries on the SKKT105/12E or any hard-to-find power semiconductor, contact our team directly at 239-734-7566 or sales@igbts.us. We support OEMs, repair depots, and MRO procurement teams nationwide.