The Infineon TT500N18KOF is a high-current thyristor module rated for 500A continuous current and 1800V repetitive peak off-state voltage. Housed in Infineon's industry-standard KOF package, this dual thyristor configuration is engineered for phase-controlled rectification, AC power regulation, and high-power switching in industrial equipment. Its robust construction, optimized gate sensitivity, and low thermal resistance make it a dependable solution for continuous-duty applications where reliability and thermal performance are non-negotiable requirements.

The TT500N18KOF is widely deployed in AC motor soft starters, DC motor drives, industrial heating controllers, static VAR compensators, and welding power supplies. Its 1800V voltage class provides the necessary margin for operation on 690V and higher AC bus systems where transient overvoltages are a routine concern. Utilities, steel mills, mining operations, oil and gas facilities, and marine power systems rely on thyristor modules of this class to handle regenerative loads and controlled rectifier bridges that must perform continuously under harsh environmental and electrical stress conditions.

Quick Reference: TT500N18KOF

Key Features of the TT500N18KOF:

• 500A average on-state current (ITAV) suitable for high-power phase-controlled converter stages
• 1800V VDRM/VRRM blocking voltage providing robust margin on 690V and higher AC distribution systems
• Dual thyristor (SCR) configuration in a compact KOF package enabling simplified antiparallel or bridge circuit assembly
• Low thermal resistance junction-to-case (RthJC) optimized for continuous-duty operation with forced air or liquid cooling
• Gate sensitivity and dI/dt ratings engineered to withstand high di/dt firing conditions typical of industrial phase-control applications
• Infineon's pressure-contact or solder-free internal construction ensures long-term reliability under thermal cycling and vibration

With a factory lead time of 99 weeks on new production orders, the TT500N18KOF presents a serious procurement challenge for any unplanned breakdown or capital project with a firm commissioning date. Sourcing from the open market without a trusted distributor introduces counterfeit risk and quality uncertainty. ATI Accurate Technology maintains verified, traceable inventory of hard-to-find and long-lead-time Infineon thyristor modules exactly like the TT500N18KOF, allowing maintenance teams and project managers to resolve critical shortages immediately rather than waiting nearly two years for factory fulfillment.

ATI Accurate Technology is headquartered in Palmetto, Florida and specializes in power semiconductors including IGBTs, thyristors, diodes, and rectifier modules. Orders placed before 5PM EST ship same day. Whether you need a single replacement module or volume quantities for a fleet overhaul, ATI offers competitive pricing and responsive support. Contact our team at 239-734-7566 or sales@igbts.us for availability confirmation, volume pricing, and technical assistance.