7MBR25SA120-50: Integrated 7-in-1 IGBT Module for Compact, High-Efficiency Motor Drives
Content last revised on October 9, 2025.
Product Overview: A Compact Power Core for Motion Control
The Fuji Electric 7MBR25SA120-50 is a highly integrated 7-in-1 IGBT module designed to streamline the development of low-power motor drives and servo systems. Engineered for efficiency and reliability, this module combines a three-phase inverter, a brake chopper, and an integrated NTC thermistor into a single compact M-package. Its core specifications include 1200V | 25A | VCE(sat) (typ) 2.1V. This integration provides two primary engineering benefits: significantly simplified circuit design and enhanced thermal performance. By consolidating key power stages, it directly addresses the challenge of reducing system size and assembly costs without compromising on efficiency. For applications demanding higher power density in the 1-3 kW range, the 7MBR25SA120-50 provides a robust and efficient power conversion solution.
Key Parameter Overview
Decoding the Electrical Characteristics for Optimal Drive Performance
The specifications of the 7MBR25SA120-50 are tailored for balanced performance in variable frequency and servo drive applications. The low collector-emitter saturation voltage (VCE(sat)) is a critical parameter, as it directly minimizes conduction losses, which is paramount for overall system efficiency. The following table highlights the key performance metrics based on the official manufacturer data.
| Parameter | Symbol | Condition | Value |
|---|---|---|---|
| Absolute Maximum Ratings (Tc=25°C) | |||
| Collector-Emitter Voltage | VCES | - | 1200V |
| Gate-Emitter Voltage | VGES | - | ±20V |
| Collector Current (DC, 1ms) | IC, IC pulse | Tc=80°C | 25A, 50A |
| Collector Power Dissipation (per IGBT) | PC | - | 120W |
| Operating Junction Temperature | Tj | - | +150°C |
| Electrical Characteristics (Tj=25°C) | |||
| Collector-Emitter Saturation Voltage (Inverter) | VCE(sat) | IC=25A, VGE=15V | 2.1V (typ), 2.6V (max) |
| Turn-on Switching Loss (Inverter) | Eon | IC=25A, VCC=600V | 3.5mJ (typ) |
| Turn-off Switching Loss (Inverter) | Eoff | 3.1mJ (typ) | |
| Thermal Resistance (Inverter IGBT) | Rth(j-c) | Junction to Case | 1.04°C/W (max) |
| NTC Thermistor Resistance | R25 | T=25°C | 50kΩ ± 5% |
Download the 7MBR25SA120-50 datasheet for detailed specifications and performance curves.
Application Scenarios & Value
System-Level Benefits in Compact Motion Control and Automation
The 7MBR25SA120-50 is an excellent fit for power conversion systems where space, assembly efficiency, and reliability are critical design constraints. Its primary value is realized in applications such as small-scale Variable Frequency Drives (VFDs), servo drives for factory automation, and general-purpose inverters.
Consider the design of a compact VFD for a conveyor belt system. The engineer's challenge is to fit the entire drive into a small, sealed enclosure while managing heat effectively. The 7MBR25SA120-50's 7-in-1 integration is a significant advantage, reducing the PCB footprint and simplifying the layout compared to a discrete solution. Furthermore, its low VCE(sat) of 2.1V reduces the heat generated during operation. This is analogous to using a wider, smoother pipe for water flow; less energy is wasted as friction (heat), meaning more energy is delivered to the motor. This lower heat generation can enable the use of a smaller, more cost-effective heatsink, directly contributing to the miniaturization goal. For systems that require higher current handling for larger motors, the related 7MBR50SB120 offers a similar integrated topology with a 50A rating.
Industry Insights & Strategic Advantage
Meeting Demands for Energy Efficiency and System Miniaturization
The design philosophy behind the 7MBR25SA120-50 aligns with two powerful trends in industrial automation: stringent energy efficiency mandates and the continuous drive for smaller equipment footprints. Global regulations are pushing designers to create more efficient motor control systems to reduce overall energy consumption. The module's low conduction and switching losses are not just datasheet figures; they are enabling features that help systems meet these tough standards. The integration of multiple power stages into one component also supports the move towards modular and decentralized drive architectures, where compact inverters are placed closer to the motor, reducing cabling costs and improving system response. This level of integration helps engineers design systems compliant with key industry standards, such as those related to the electrical safety and performance of drive systems, including aspects covered under regulations like **IEC 61800-5-1**.
Engineering FAQs on the 7MBR25SA120-50
What is the primary benefit of the integrated NTC thermistor in the 7MBR25SA120-50?
The integrated NTC thermistor provides a direct, real-time method for monitoring the module's substrate temperature. This is crucial for implementing over-temperature protection in the drive's control logic, preventing thermal runaway and enhancing long-term system reliability without the need for an external sensor on the heatsink.
How does the 7-in-1 configuration impact the manufacturing and assembly process?
It significantly streamlines manufacturing by reducing the Bill of Materials (BOM) and minimizing component placement steps. A single module replaces at least seven discrete IGBTs/diodes, a separate thermistor, and the associated gate drive isolation components, leading to faster assembly times, lower labor costs, and a reduced likelihood of assembly errors.
Request for Information
To evaluate the 7MBR25SA120-50 for your specific application, please contact our technical sales team for further details and to discuss your design requirements. We can provide engineering-level support to help you assess its suitability for your power conversion project.
