FUJI 7MBI40N-120 40A 1200V IGBT Module | Replacement, Equivalent & Selection Guide
The FUJI 7MBI40N-120 is a 6-in-1 (six-pack) IGBT power module manufactured by Fuji Electric, rated at 40A / 1200V. It is widely used in industrial inverters, servo drives, and motor control systems. This page provides full technical specifications, compatible replacement models, application guidance, and sourcing information to help engineers and procurement teams make confident decisions.
Technical Specifications
- Part Number: 7MBI40N-120
- Manufacturer: Fuji Electric
- Module Type: 6-in-1 IGBT Module (Three-Phase Bridge)
- Collector Current (IC): 40A
- Collector-Emitter Voltage (VCES): 1200V
- Gate-Emitter Voltage (VGES): ±20V
- Saturation Voltage (VCE(sat)): ≤ 2.5V (typ.)
- Operating Temperature (Tj): -40°C to +150°C
- Package: Fuji N-Series module package
- Isolation Voltage: 2500V AC (1 min)
- Weight: approx. 380g
Compatible Replacement & Equivalent Models
The following models are commonly referenced as functional equivalents or drop-in replacements for the 7MBI40N-120. Always verify pinout, gate drive requirements, and thermal interface before substitution:
- Fuji Electric: 7MBI40N-120-50, 7MBI50N-120 (higher current), 6MBI40N-120
- Mitsubishi: CM40MD-12H, CM50MD-12H (verify footprint)
- Semikron: SKM40GB123D (verify package compatibility)
- Infineon / Eupec: BSM40GB120DN2 (verify gate drive)
- IXYS: MWI40-12A7 (verify pinout)
Note: Konmask.com recommends using original Fuji Electric parts for safety-critical applications. Consult our technical team for substitution validation.
Why Choose the Original 7MBI40N-120
- Guaranteed electrical and mechanical compatibility with OEM equipment
- Fuji Electric’s proven N-Series reliability in harsh industrial environments
- Consistent VCE(sat) and switching characteristics — critical for drive tuning
- Full traceability and manufacturer warranty support
- Reduced risk of premature failure vs. unverified third-party substitutes
Typical Applications
- Variable Frequency Drives (VFD) / AC motor inverters
- Servo amplifiers and CNC spindle drives
- Industrial UPS and power conditioning systems
- Welding inverters and induction heating equipment
- Solar inverters and energy storage converters
- Elevator and crane drive systems
System Compatibility
The 7MBI40N-120 is commonly found in equipment from the following OEM brands:
- Yaskawa: CIMR-series drives (G5, F7, G7 platforms)
- Mitsubishi: FR-A500 / FR-A700 series inverters
- Fuji Electric: FRENIC-Multi, FRENIC-Ace series
- Siemens: MICROMASTER 440 (select variants)
- ABB: ACS550 / ACS800 (select power ranges)
Always cross-reference the OEM service manual before replacement.
Selection Guide
Use the following criteria to confirm the 7MBI40N-120 is the correct module for your application:
- Current rating: Load current ≤ 40A continuous (derate per thermal design)
- Voltage class: DC bus voltage ≤ 800V (1200V VCES with standard derating)
- Topology: Three-phase inverter bridge (6-in-1 package required)
- Gate drive: ±15V recommended; compatible with standard IGBT gate drivers
- Thermal interface: Use thermal grease (≥ 1.0 W/m·K) and torque bolts to spec
- Switching frequency: Suitable for 2–16 kHz PWM applications
Quality Assurance & Sourcing
- All modules sourced from authorized distributors or verified surplus channels
- 100% visual inspection and basic electrical screening before shipment
- Anti-static packaging with humidity indicator cards
- Batch traceability records available on request
- Konmask.com specializes in industrial automation components for B2B buyers globally
How to Order
- Confirm part number: 7MBI40N-120
- Specify quantity and required delivery timeline
- Contact us via email or phone for bulk pricing and lead time
- Receive proforma invoice → confirm payment → shipment with tracking
📧 support@konmask.com | 📞 +0086 19859288691
Replacement & Compatibility FAQ
Q: Can I replace 7MBI40N-120 with 7MBI40N-120-50?
A: Yes, the -50 suffix denotes an improved version with the same electrical ratings and pinout. It is a direct drop-in replacement.
Q: Is the 7MBI50N-120 a compatible upgrade?
A: The 7MBI50N-120 offers 50A rating with the same 1200V class and compatible package. It can be used as an uprated replacement if the gate driver and heatsink support it.
Q: How do I identify a failed IGBT module?
A: Common symptoms include drive fault codes (overcurrent, short circuit), burnt smell, visible cracks on the module surface, or low resistance between C-E terminals measured with a multimeter.
Q: Do you provide installation support?
A: Yes. Our technical team can provide mounting torque specs, thermal interface recommendations, and gate drive parameter guidance. Contact us before installation.
Q: What is the lead time for 7MBI40N-120?
A: Stock items ship within 1–3 business days. Non-stock orders typically require 2–4 weeks. Contact us for current availability.
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Contact: support@konmask.com | +0086 19859288691
