The Infineon TT56N14LOF is a thyristor (SCR) module combining two thyristor elements in a common package, rated for 56A average on-state current (IT(AV)) and a 1400V repetitive peak off-state voltage (VDRM/VRRM). Designed to IEC and industry-standard footprints, this module delivers reliable phase control and AC switching performance in high-voltage industrial environments. Its isolated baseplate construction and optimized thermal resistance support continuous operation in thermally demanding applications where long-term dependability is non-negotiable.

The TT56N14LOF is well suited for AC motor soft starters, variable-speed drives, resistance heating controllers, static VAR compensators, and UPS input stage control circuits. Its 1400V voltage class provides the necessary margin for 690V AC bus systems where line transients and commutation spikes must be absorbed without device stress. Power conversion OEMs, industrial automation integrators, and MRO procurement teams rely on this series for both new installations and drop-in replacement of aging thyristor modules in legacy equipment still in active service.

Quick Reference: TT56N14LOF

Key Features of the TT56N14LOF:

• 1400V VDRM/VRRM rating provides robust voltage margin for 690V AC three-phase bus applications with full transient protection headroom
• 56A IT(AV) continuous on-state current supports medium-power phase control circuits without derating under normal heatsink conditions
• Isolated copper baseplate enables direct mounting to standard heatsinks, minimizing junction-to-case thermal resistance and simplifying mechanical assembly
• Dual thyristor configuration in a single module reduces component count, board space, and assembly time versus discrete SCR implementations
• Gate trigger current and holding current specifications optimized for compatibility with standard firing board drivers used in industrial drive and soft-starter platforms
• Industry-standard module footprint ensures dimensional interchangeability with equivalent 56A/1400V thyristor modules from multiple manufacturers

With a current factory lead time of 99 weeks on new production, procurement of the TT56N14LOF through standard distribution channels is not a viable option for most maintenance or production schedules. Unplanned downtime caused by a failed thyristor module cannot wait two years for factory fulfillment. ATI specializes in exactly this scenario — maintaining inventory of hard-to-find, long-lead-time, and obsolete power semiconductors so engineers and buyers can resolve critical shortages immediately. Whether you need a single replacement or a buffer stock quantity, ATI has you covered without factory queue delays.

ATI Accurate Technology is a power semiconductor distributor located in Palmetto, Florida, stocking IGBTs, thyristors, diodes, and rectifier modules for immediate shipment. Orders placed before 5PM EST ship same day. Contact our team for volume pricing, cross-reference assistance, or technical questions: call 239-734-7566 or email sales@igbts.us. We support MRO buyers, OEM production lines, and engineering teams who need the right part fast.