The Infineon DT250N16KOF is a high-power thyristor/diode module combining a thyristor (SCR) and a diode in a single isolated package, rated for 250A average on-state current and a 1600V repetitive peak off-state voltage (VDRM/VRRM). This configuration is optimized for half-controlled bridge and phase-control rectifier topologies where a freewheeling or bypass diode is required alongside the controlled switching element. The robust isolated base plate simplifies thermal management and heatsink mounting, making it a reliable building block in high-current industrial power stages.

The DT250N16KOF is widely deployed in AC motor soft starters, DC motor drives, industrial heating regulators, excitation systems for synchronous machines, and crane or hoist drive controllers. Its thyristor/diode pairing suits half-wave and semi-converter bridge configurations used throughout steel processing, paper mills, mining equipment, marine propulsion auxiliaries, and large-scale HVAC systems. Engineers specifying phase-controlled rectifiers for field supply units and battery charging systems also rely on this module format for its proven thermal cycling durability and compact footprint relative to discrete component assemblies.

Quick Reference: DT250N16KOF

Key Features of the DT250N16KOF:

• 250A average on-state current (IT(AV)) with high surge current capability for robust fault tolerance in industrial environments
• 1600V VDRM/VRRM blocking voltage providing design margin in 690V AC line-connected applications
• Integrated thyristor and diode in one isolated module package, reducing component count and simplifying PCB or busbar layout
• Electrically isolated copper base plate enabling direct heatsink mounting without additional isolation hardware
• Low thermal resistance junction-to-case (Rth(j-c)) supporting high continuous power dissipation in forced-air or liquid-cooled assemblies
• Gate trigger characteristics optimized for standard SCR gate drive circuits, compatible with conventional firing card designs used across major drive platforms

With a current factory lead time of 99 weeks from Infineon, the DT250N16KOF presents a serious supply chain risk for OEMs managing production schedules and maintenance teams supporting installed drive systems. Downtime on a motor drive or rectifier cabinet cannot wait two years for a factory order to clear. Obsolescence pressure on legacy drive platforms further compounds the challenge, as system redesigns around available alternatives are costly and time-consuming. Partnering with a stocking distributor that maintains physical inventory of hard-to-find power semiconductor modules is the most effective mitigation strategy.

ATI Accurate Technology, based in Palmetto, Florida, stocks the DT250N16KOF in new OEM condition and offers same-day shipping on orders placed before 5PM EST. ATI specializes in IGBTs, thyristors, diodes, and rectifier modules—including obsolete and long-lead-time parts that are difficult to source elsewhere. Volume pricing is available for MRO stocking orders and production builds. Contact ATI at 239-734-7566 or sales@igbts.us for a quote or availability confirmation.