Bosch BSM400GA120DN2FSE3256 IGBT Power Module | Replacement, Equivalent & Selection Guide
The Bosch BSM400GA120DN2FSE3256 is a high-performance half-bridge IGBT power module rated at 400A / 1200V, designed for demanding industrial drive, inverter, and power conversion applications. This page provides full technical specifications, compatible replacement models, application guidance, and a structured selection guide to help engineers and procurement teams make confident sourcing decisions.
Technical Specifications
- Part Number: BSM400GA120DN2FSE3256
- Manufacturer: Bosch (originally Eupec / Infineon heritage)
- Module Type: Half-Bridge (2-in-1) IGBT Power Module
- Collector Current (IC): 400 A
- Collector-Emitter Voltage (VCES): 1200 V
- Gate-Emitter Voltage (VGES): ±20 V
- Topology: Dual / Half-Bridge
- Switching Technology: NPT IGBT with soft-recovery freewheeling diode
- Thermal Resistance (Rth(j-c)): Refer to datasheet
- Package: BSM (standard baseplate module)
- Isolation Voltage: 4000 Vrms
- Operating Temperature: -40°C to +150°C (Tj)
- Weight: ~1500 g
Compatible Replacement & Equivalent Models
The following modules are functionally equivalent or drop-in replacements for the BSM400GA120DN2FSE3256. Always verify pinout, gate drive requirements, and thermal interface before substitution.
- Infineon BSM400GA120DN2 — Direct electrical equivalent; same 400A/1200V half-bridge topology
- Infineon FF400R12KE4 — 400A 1200V IGBT4 module; improved switching performance
- Semikron SKM400GA12T4 — 400A 1200V IGBT module; compatible footprint in many designs
- Mitsubishi CM400DY-24NF — 400A 1200V dual IGBT; verify package dimensions
- Fuji Electric 2MBI400VN-120 — 400A 1200V V-series; suitable for retrofit evaluation
Note: Konmask.com recommends engineering validation before any substitution in safety-critical systems.
Why Choose the Original Model
- Proven field reliability in Bosch/Rexroth drive systems and OEM industrial equipment
- Exact OEM specification compliance — no re-qualification required for existing designs
- Optimized gate drive compatibility with Bosch drive controller boards
- Traceable manufacturing lot for quality-controlled industrial procurement
- Long service life in high-cycle industrial environments
Typical Applications
- AC variable frequency drives (VFD) and servo drives
- Industrial UPS and energy storage inverters
- Traction and railway auxiliary power systems
- Welding power supplies and induction heating
- Renewable energy inverters (solar, wind)
- Bosch Rexroth drive system maintenance and repair
System Compatibility
- Drive Systems: Bosch Rexroth IndraDrive, Siemens SINAMICS, ABB ACS series
- Gate Driver ICs: Compatible with standard IGBT gate drivers (e.g., Infineon 1ED, CONCEPT 2SD315A)
- Recommended Gate Resistance (Rg): Refer to OEM datasheet for optimal switching loss / EMI balance
- Heatsink Interface: Baseplate module — requires thermal compound and appropriate heatsink
- Bus Voltage Range: Up to 800 V DC bus (derate per application)
Selection Guide
Use the criteria below to confirm the BSM400GA120DN2FSE3256 is the right module for your application, or to identify the best alternative:
- Current Rating: 400 A — suitable for drives up to ~250 kW at 400 V AC
- Voltage Class: 1200 V — standard for 690 V AC / 800 V DC bus systems
- Topology Need: Half-bridge — ideal for 3-phase inverter legs (use 3 modules per inverter)
- Switching Frequency: Optimized for 2–8 kHz; evaluate IGBT4/IGBT7 alternatives for higher frequencies
- Thermal Budget: Verify Rth(j-c) against heatsink capacity at target power dissipation
- Form Factor: Confirm BSM footprint compatibility with existing PCB / busbar layout
Quality Assurance & Sourcing
- All modules sourced through authorized distribution channels or verified surplus with full traceability
- Pre-shipment inspection: visual, dimensional, and basic electrical parameter verification
- Anti-static packaging with humidity indicator card
- Certificate of conformance available upon request
- Konmask.com maintains a zero-counterfeit policy — all parts are subject to authentication checks
How to Order
- SKU: BSM400GA120DN2FSE3256
- Add to cart directly, or contact us for bulk / project pricing
- Lead time: typically 3–7 business days for in-stock units; custom sourcing available
- Payment: T/T, PayPal, credit card accepted
- Shipping: DHL / FedEx worldwide; export documentation provided
- For RFQ or technical consultation: support@konmask.com | +0086 19859288691
Replacement & Compatibility FAQ
Q: Can I replace BSM400GA120DN2FSE3256 with Infineon FF400R12KE4?
A: In most cases yes — both are 400A/1200V IGBT modules. However, the FF400R12KE4 uses IGBT4 technology with different switching characteristics. Verify gate drive settings and thermal interface before deployment.
Q: Is the BSM400GA120DN2FSE3256 still in production?
A: This module is associated with legacy Bosch/Eupec product lines. Konmask.com can source new-old-stock (NOS) or equivalent replacement units. Contact us for current availability.
Q: What is the difference between BSM400GA120DN2 and BSM400GA120DN2FSE3256?
A: The suffix FSE3256 typically denotes a specific customer or application variant (e.g., modified gate threshold, special screening, or packaging). Confirm with the OEM datasheet or contact Konmask.com for clarification.
Q: Do you provide a datasheet?
A: Yes. Contact support@konmask.com and reference SKU BSM400GA120DN2FSE3256 to request the datasheet.
© 2026 Konmask.com. All rights reserved.
Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
