The SKM145GB128DNR is a high-performance IGBT module from SEMIKRON rated at 145A continuous collector current and 1200V blocking voltage. Designed for demanding switching applications, this module integrates IGBT chips with co-packed freewheeling diodes, delivering efficient, reliable operation in hard-switching and soft-switching converter topologies. The DNR series designation reflects SEMIKRON's optimized chip technology for reduced switching losses and improved thermal cycling capability, making this module a strong choice wherever ruggedness and efficiency are non-negotiable requirements in medium-to-high power systems.

The SKM145GB128DNR sees widespread deployment across industrial motor drives, regenerative braking systems, UPS and energy storage inverters, induction heating equipment, and welding power supplies. Its 1200V voltage class suits three-phase inverter legs operating from 480V to 690V AC bus architectures. The module is also found in solar inverters, traction auxiliary converters, and industrial servo drives where thermal performance and long operational life under repetitive load cycles are critical to system uptime and total cost of ownership.

Quick Reference: SKM145GB128DNR

Key Features of the SKM145GB128DNR:

• 1200V VCES blocking voltage suitable for 480V–690V three-phase inverter topologies
• 145A rated continuous collector current with high peak current capability for overload conditions
• Co-packed fast-recovery freewheeling diodes optimized for reduced reverse recovery losses
• DNR chip technology providing low VCEsat and reduced switching energy (Eon/Eoff) for improved efficiency
• Isolated copper baseplate construction enabling direct heatsink mounting and excellent thermal transfer
• Industry-standard SKiiP-compatible footprint simplifying drop-in replacement in existing drive platforms

The SKM145GB128DNR carries a factory lead time of approximately 36 weeks for new production orders, which is common across SEMIKRON's higher-current 1200V module range due to wafer-level supply constraints and production scheduling. For maintenance teams facing unplanned downtime or procurement teams managing safety stock, waiting on factory lead times is not always an option. ATI Accurate Technology actively sources long lead time and allocation-constrained SEMIKRON modules, maintaining relationships that allow us to locate genuine OEM inventory when standard distribution channels fall short. Contact us early to avoid critical delays.

ATI Accurate Technology is located in Palmetto, Florida, and ships same-day on orders placed before 5PM EST. We stock IGBTs, thyristors, diodes, and rectifier modules from leading manufacturers including SEMIKRON, and we specialize in hard-to-find and long lead time parts. Volume pricing is available for MRO and OEM procurement. Call us at 239-734-7566 or email sales@igbts.us to check current availability on the SKM145GB128DNR and discuss your project requirements with our team.