The Infineon TT105N12LOF is a dual thyristor (SCR) module rated at 105A average on-state current (IT(AV)) and 1200V repetitive peak off-state voltage (VDRM/VRRM). Built on Infineon's proven pressure-contact module platform, it delivers reliable phase-control and rectification performance in high-power industrial circuits. The low-profile package provides a standardized bolt-down footprint compatible with common heat sink assemblies, reducing design complexity. Gate sensitivity and thermal characteristics are optimized for line-frequency switching, making this module a dependable choice for robust, long-service-life power conversion systems operating in harsh environments.

The TT105N12LOF is widely deployed in AC motor soft starters, DC drive front-end converters, resistance heating controllers, industrial UPS systems, and electrochemical process rectifiers. Its voltage and current class make it well suited for three-phase bridge configurations in equipment operating from 480V to 690V mains supplies. Industries including metals processing, chemical manufacturing, oil and gas, marine propulsion, and renewable energy infrastructure routinely specify this thyristor module where controllable, high-current rectification or AC power regulation is required under continuous-duty operating conditions.

Quick Reference: TT105N12LOF

Key Features of the TT105N12LOF:

• 1200V repetitive peak off-state voltage (VDRM/VRRM) providing robust margin in 480V–690V mains applications
• 105A average on-state current (IT(AV)) supporting continuous-duty, high-power phase-control and rectifier circuits
• Dual thyristor configuration in a single module for simplified bill of materials and reduced assembly labor
• Low thermal resistance (RthJC) enabling efficient heat transfer to external heat sinks under full-load conditions
• Isolated copper base plate construction for electrical isolation from heat sink without additional insulating hardware
• Standard module footprint compatible with widely available Infineon and third-party heat sink assemblies for direct drop-in replacement

With a published factory lead time of 99 weeks on new production, the TT105N12LOF presents a significant procurement risk for OEM manufacturers and MRO operations alike. Line-down situations cannot wait nearly two years for a factory order to deliver. Procurement professionals managing spares inventory for motor drives, soft starters, or industrial rectifier systems should treat current stock availability as a priority. Sourcing from a stocking distributor with verified new OEM inventory is the only reliable path to avoiding costly production delays or equipment downtime when this module reaches end of life or allocation.

ATI Accurate Technology is a power semiconductor distributor located in Palmetto, Florida, stocking IGBTs, thyristors, diodes, and rectifier modules — including long-lead-time and hard-to-find parts like the TT105N12LOF. Orders placed before 5PM EST ship same day. Contact our team for volume pricing, cross-reference support, or urgent sourcing assistance. Call 239-734-7566 or email sales@igbts.us.