The Infineon BSM400GA120DN2S is a 400A, 1200V IGBT module engineered for high-current, high-voltage power electronics applications where reliability and switching efficiency are non-negotiable. Based on Infineon's proven DN2S dual-switch topology, this module integrates an optimized IGBT chip set with freewheeling diodes to minimize conduction and switching losses. Its robust base plate construction and isolated DCB substrate support excellent thermal cycling endurance, making it a trusted choice for engineers designing or maintaining equipment at the upper end of the medium-voltage power range.

The BSM400GA120DN2S is widely deployed in industrial AC motor drives, regenerative braking systems, traction inverters, UPS systems, and high-power DC-AC converters used in renewable energy infrastructure. Its current and voltage ratings make it suitable for multi-megawatt variable frequency drives and grid-tied inverter stages where thermal headroom and switching speed must be balanced against EMI constraints. Maintenance engineers in steel, paper, mining, and transit industries frequently specify this module as a direct replacement in legacy drive platforms where board-level compatibility is essential.

Quick Reference: BSM400GA120DN2S

Key Features of the BSM400GA120DN2S:

• 1200V collector-emitter breakdown voltage (VCES) with 400A rated DC collector current for high-power inverter and converter stages
• Infineon DN2S dual-switch (half-bridge) configuration with integrated fast-recovery freewheeling diodes per switch position
• Low VCEsat characteristics reduce on-state conduction losses, improving system efficiency in continuous-duty industrial cycles
• Optimized for soft-switching and hard-switching topologies across standard 10–20kHz PWM drive frequencies
• DCB (Direct Copper Bonded) ceramic substrate provides high thermal conductivity and superior isolation voltage for reliable heat dissipation to heatsink
• Industry-standard module footprint ensures pin-compatible drop-in replacement across common Infineon and competing platform drive assemblies

With a published factory lead time of 99 weeks, the BSM400GA120DN2S represents exactly the type of long-lead, hard-to-find component that can stall a production line or delay a critical repair. Original production runs are limited, and distributor allocations are consumed quickly by large OEM customers. Procurement teams managing MRO inventory or executing emergency repairs cannot afford to rely solely on standard distribution channels for a part with near-two-year factory replenishment cycles. Having a reliable stocking source for this module is essential to maintaining uptime in the systems that depend on it.

ATI Accurate Technology stocks the BSM400GA120DN2S new OEM from our Palmetto, Florida facility. We specialize in IGBTs, thyristors, diodes, and rectifier modules — including obsolete and long-lead-time parts exactly like this one. Same-day shipping is available on orders placed before 5PM EST. Volume pricing is available for MRO and OEM procurement programs. Contact our team today at 239-734-7566 or sales@igbts.us.