The Infineon TD425N16KOF is a high-current thyristor-diode power module rated at 425A continuous current and 1600V repetitive peak off-state voltage (VDRM/VRRM). Housed in a robust industry-standard module package, it integrates a phase-control thyristor with a fast freewheeling diode in a single assembly. This configuration reduces component count and thermal management complexity while delivering reliable switching performance in high-power conversion environments. The module is engineered for continuous industrial duty with low on-state losses and stable thermal characteristics across a wide operating temperature range.

The TD425N16KOF is well-suited for three-phase and single-phase rectifier bridges, DC motor drives, crane and hoist controls, UPS systems, induction heating equipment, and other heavy industrial power conversion systems where controlled rectification and flyback protection are required simultaneously. Its high current and voltage ratings make it a preferred choice for equipment in steel mills, mining operations, marine drives, and large-scale HVAC systems. The integrated diode eliminates the need for an external freewheeling device, reducing assembly complexity and improving system reliability in the field.

Quick Reference: TD425N16KOF

Key Features of the TD425N16KOF:

• 425A RMS on-state current (IT(AV)) with integrated thyristor and freewheeling diode in a single module package
• 1600V repetitive peak off-state and reverse voltage (VDRM/VRRM) for robust margin in high-line industrial environments
• Low on-state voltage drop (VT) minimizing conduction losses and reducing thermal stress on heat sink assemblies
• Industry-standard module footprint with isolated baseplate for direct mounting to standard heat sinks without additional isolation hardware
• Suitable for phase-control firing angles across a wide gate trigger current range, compatible with standard SCR gate driver circuits
• High surge current capability (ITSM) providing protection against transient overload conditions common in motor starting and fault scenarios

The TD425N16KOF carries a published factory lead time of 99 weeks — nearly two years — making spot market availability essential for any maintenance, repair, or new build application that cannot tolerate that delay. Obsolete and long-lead Infineon thyristor modules like this one are routinely pulled from production schedules with little notice, leaving facilities with aging equipment in a difficult position. Procurement teams and MRO engineers increasingly rely on distributors with verified stock on hand rather than waiting on allocation from the factory or chasing unreliable broker channels.

ATI Accurate Technology, based in Palmetto, Florida, maintains verified in-stock inventory of the TD425N16KOF and ships same-day on orders placed before 5PM EST. We specialize in hard-to-find, long-lead, and obsolete power semiconductors including IGBTs, thyristors, diodes, and rectifier modules. Volume pricing is available. Contact our team directly at 239-734-7566 or sales@igbts.us to confirm availability, request a quote, or discuss application requirements.