The Infineon TT105N12KOF is a dual thyristor (SCR) power module delivering 105A average on-state current (IT(AV)) and a 1200V repetitive peak off-state voltage (VDRM/VRRM). Housed in a compact, isolated base module package, it is engineered for high reliability in phase-controlled rectifier and AC power regulation circuits. The KOF suffix designation indicates a specific configuration optimized for robust gate triggering and thermal performance, making it a proven choice for industrial drive and power conversion system designers who require predictable, long-service-life switching behavior.

The TT105N12KOF sees wide deployment across industrial AC/DC converters, soft-starter assemblies, DC motor drives, crane and hoist control systems, electrochemical process rectifiers, and UPS input stage circuits. Its 1200V voltage class provides the headroom required in 480V and 690V three-phase mains environments, while the 105A current rating suits mid-power drive cabinets and power conditioning equipment. OEMs designing variable-speed drives, welding power supplies, and heating control systems have specified this module for its stable triggering characteristics and rugged module construction suited to continuous industrial duty cycles.

Quick Reference: TT105N12KOF

Key Features of the TT105N12KOF:

• 1200V repetitive peak off-state and reverse voltage (VDRM/VRRM) — suitable for 480V and 690V three-phase mains with standard derating margins
• 105A average on-state current (IT(AV)) with high surge current capability (ITSM) for robust overcurrent withstand in converter service
• Isolated copper base plate construction enables direct heatsink mounting with predictable, low thermal resistance junction-to-case (Rth(j-c)) for efficient thermal management
• Dual thyristor (common cathode or common anode) internal configuration supports flexible circuit topologies including fully controlled bridge rectifiers
• Low gate trigger current (IGT) and threshold voltage (VGT) specifications ensure reliable firing across full operating temperature range
• Infineon's established press-pack-style module platform provides consistent lot-to-lot parameter uniformity critical for paralleled or series thyristor configurations

With a published factory lead time of 99 weeks, the TT105N12KOF is effectively on indefinite allocation from Infineon's production schedule — a critical concern for MRO buyers managing aging drive systems and OEMs supporting installed equipment. Procurement teams relying solely on franchised distribution will face extended downtime exposure. ATI Accurate Technology specializes in exactly this scenario, maintaining independent stock of long-lead-time, hard-to-find, and discontinued Infineon thyristor modules to keep your production lines and service operations running without waiting on factory queues.

ATI Accurate Technology is located in Palmetto, Florida, and ships same-day on orders received before 5PM EST. Whether you need a single replacement module for emergency maintenance or a volume order to secure your service inventory, our team is ready to assist. Contact us for volume pricing, cross-reference support, and availability confirmation: call 239-734-7566 or email sales@igbts.us.