Fuji Electric 6MBP75JA120 IGBT Power Module – 6MBP Series

6MBP75JA120: Three-Phase IGBT Inverter Bridge in a Single-Package Architecture

The Fuji Electric 6MBP75JA120 is a 6-in-1 IGBT power module rated at 75 A continuous collector current and 1200 V collector-emitter blocking voltage. It integrates a complete three-phase, two-level voltage source inverter (VSI) bridge — six IGBT switches plus six co-packaged fast-recovery freewheeling diodes — into a single thermally managed housing with a copper base plate. This integration eliminates the discrete component count that would otherwise be required to construct an equivalent three-phase bridge, reducing PCB area, interconnect inductance, and assembly labor in variable frequency drives, servo amplifiers, and industrial power conditioning equipment.

Within a control loop, the 6MBP75JA120 occupies the power stage between the DC bus capacitor bank and the AC motor terminals. The PWM controller generates six complementary gate signals (with dead-time insertion) that are applied to the IGBT gates via isolated gate drivers. The module converts the fixed DC bus voltage — typically 540–650 V DC for 400 V AC input systems — into a pulse-width-modulated three-phase output at the U, V, W terminals. The integrated freewheeling diodes conduct during dead-time intervals, providing a low-impedance path for inductive load current and clamping flyback transients without requiring external snubber networks in most standard drive topologies.

Real-time Stock & RFQ: [email protected] | WhatsApp: +86 18359268345

Technical Parameters

Hardware Logical Analysis

The 6MBP75JA120 is built on Fuji Electric’s planar IGBT cell structure, which achieves a balance between on-state conduction loss and switching speed that is well-suited to industrial drive frequencies in the 2–16 kHz range. The six IGBT chips are arranged in three half-bridge pairs (high-side and low-side per phase), with each pair sharing a common emitter reference at the AC output terminal. This arrangement minimizes the internal commutation loop inductance between the IGBT and its co-packaged freewheeling diode, directly reducing the voltage overshoot (ΔV = L·di/dt) that appears across the device during turn-off — a critical parameter in 1200 V class devices where the margin between operating bus voltage and VCES is narrower than in 600 V class modules.

The copper base plate provides a low thermal resistance path from the IGBT die to the external heatsink. Copper’s thermal conductivity (~385 W/m·K) is approximately 2.5× that of aluminum, enabling the module to sustain higher transient power dissipation without exceeding the maximum junction temperature. The base plate also acts as a mechanical reference plane, ensuring co-planarity of the mounting surface across all six switch positions — a requirement for uniform thermal interface material (TIM) compression and consistent Rth(j-c) across the module.

From an EMC perspective, the 6-in-1 package constrains the physical separation between the high-side and low-side switches of each phase leg to the minimum achievable within the module housing. This reduces the area of the commutation loop formed by the DC bus capacitors, the IGBT switches, and the freewheeling diodes — the primary source of high-frequency conducted and radiated emissions in hard-switched inverter topologies. Designers using the 6MBP75JA120 benefit from this inherent loop area reduction compared to discrete or dual-module implementations, which simplifies compliance with IEC 61800-3 EMC requirements for variable speed drives.

The 2500 V AC isolation between the base plate and the power terminals is achieved through an aluminum nitride (AlN) or direct bonded copper (DBC) ceramic substrate. AlN substrates offer thermal conductivity of approximately 170 W/m·K combined with high dielectric strength, maintaining isolation integrity under the thermal cycling conditions typical of industrial drive operation. This isolation level meets the requirements of IEC 60664-1 for reinforced insulation in 400 V AC systems, protecting the control circuitry and heatsink (which is typically at protective earth potential) from the high-voltage DC bus.

System Integration Benefits

• Reduced BOM complexity: A single 6MBP75JA120 replaces six discrete IGBT devices, six freewheeling diodes, and the associated gate drive isolation components required in a discrete three-phase bridge, reducing component count and procurement lead time.
• Deterministic switching behavior: Matched IGBT chips within a single module exhibit tighter VCE(sat) and switching time distributions than six separately sourced discrete devices, improving the symmetry of the three-phase output waveform and reducing torque ripple in motor drive applications.
• Simplified thermal management: A single heatsink interface point for all six switches allows the thermal system to be designed and validated as a single unit, rather than managing six independent thermal paths with potentially different contact resistances.
• Lower parasitic inductance in the commutation loop: The co-packaged IGBT and freewheeling diode minimize the stray inductance between switch and diode, reducing voltage overshoot during turn-off and allowing operation closer to the rated VCES without requiring additional snubber components.
• Compatibility with standard gate drive ICs: The 6MBP75JA120 is compatible with industry-standard isolated gate driver ICs (e.g., Concept, Infineon, TI) that provide ±15 V gate drive, short-circuit protection, and under-voltage lockout — enabling straightforward integration into existing drive platforms.
• Wide junction temperature range: The −40°C to +150°C Tj range accommodates both cold-start conditions in outdoor installations and sustained high-load operation in enclosed control cabinets, without requiring derating in most standard industrial environments.
• High isolation voltage for safety compliance: The 2500 V AC isolation supports compliance with IEC 61010-1 and IEC 60950 safety standards, simplifying the certification process for end equipment incorporating the module.
• Direct replacement compatibility: The 6MBP75JA120 maintains dimensional and electrical compatibility with the 6MBP series footprint, enabling drop-in replacement in existing drive designs without PCB layout changes, provided the 1200 V voltage class is appropriate for the application.

Quality Assurance & Global Logistics

Every 6MBP75JA120 unit supplied by siemensplc.com is sourced as genuine Fuji Electric OEM product. Prior to dispatch, each module undergoes visual inspection for package integrity, terminal condition, and date code verification. Units are stored in climate-controlled conditions to prevent moisture ingress into the ceramic substrate — a known failure mechanism in IGBT modules that have been improperly stored. Anti-static trays, moisture barrier bags with desiccant, and shock-absorbing outer cartons are used for all shipments to protect the module during international transit.

Shipments originate from Xiamen, China, with access to DHL Express, FedEx International Priority, and UPS Worldwide Express services. Transit times to major industrial hubs in Europe, Southeast Asia, the Middle East, and the Americas typically range from 3 to 7 business days. EXW Xiamen and CIF destination port terms are both available. A tracking number is provided within 24 hours of dispatch. For urgent requirements, same-day dispatch is available for orders confirmed before 14:00 CST. All units are supplied with a 12-month warranty from the date of shipment, covering manufacturing defects under normal operating conditions.

Documentation available upon request includes the original Fuji Electric datasheet, a certificate of conformance, and a packing list. For large-volume procurement or project-based requirements, a formal quotation with lead time and quantity availability is issued within one business day of inquiry.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
© 2026 siemensplc.com. All rights reserved.