Fuji 7MBR25SA120 IGBT Module

Fuji Electric 7MBR25SA120 IGBT Module | The Compact CIB Solution for Motor Drives

The Fuji Electric 7MBR25SA120 is a highly integrated 1200V, 25A Power Integrated Module (PIM) designed to streamline the development of low-to-medium power conversion systems. By combining a three-phase converter bridge, a three-phase inverter, and a brake chopper into a single compact M-type package, this CIB (Converter-Inverter-Brake) module dramatically simplifies power stage design, making it an ideal choice for compact motor drives, servo controllers, and uninterruptible power supplies.

Technical Deep Dive: The Advantage of Integrated Architecture

The core value of the 7MBR25SA120 lies in its intelligent integration. Instead of sourcing, mounting, and connecting a separate diode bridge, six inverter IGBTs, and a brake chopper circuit, engineers can leverage a single, factory-tested component. This approach delivers several critical engineering benefits:

• Reduced Parasitic Inductance: The short, optimized internal connections within the module minimize stray inductance compared to a discrete layout. This leads to lower voltage overshoots during switching, enhancing reliability and simplifying the design of snubber circuits.
• Optimized Thermal Performance: All heat-generating semiconductor dies are mounted on a single Alumina (Al2O3) DCB substrate. This creates a unified thermal interface, simplifying heatsink selection and assembly and ensuring balanced heat dissipation across the entire power stage.
• Lowered VCE(sat): The Fuji Electric 7MBR25SA120 utilizes advanced trench-gate and field-stop technology, achieving a low collector-emitter saturation voltage. This directly translates to lower conduction losses, resulting in higher operational efficiency and reduced thermal load on the cooling system.

Application-Specific Value: Where the 7MBR25SA120 Excels

This module isn't just a component; it's a solution tailored for specific industry challenges. Here’s how the Fuji Electric 7MBR25SA120 delivers tangible benefits in key applications:

• Variable Frequency Drives (VFDs): For VFDs under 7.5 kW, space is often a premium. The compact footprint of this CIB module allows for smaller, more power-dense drive designs. Its integrated nature reduces assembly time and minimizes potential wiring errors on the production line.
• Servo Drives: Precision and fast response are critical in robotics and CNC machining. The low-inductance design of the 7MBR25SA120 contributes to cleaner switching waveforms, enabling more precise current control and smoother motor operation. For a deeper understanding of the switching process, explore this guide on how an IGBT works.
• Uninterruptible Power Supplies (UPS): Reliability is non-negotiable in a UPS. By reducing component count, this PIM (Power Integrated Module) inherently decreases the number of potential failure points, contributing to a more robust and dependable system.

Key Technical Specifications

For a complete list of specifications, you can download the datasheet: 7MBR25SA120 Datasheet

Navigating Your Design: Selection & Comparison Insights

When considering the 7MBR25SA120, engineers often weigh it against a fully discrete solution. While discrete components (e.g., individual IGBTs and diodes) may offer slightly more layout flexibility, they introduce significant complexity in PCB design, thermal management, and assembly. The 7MBR25SA120 bypasses these challenges, making it the superior choice for projects prioritizing time-to-market, reliability, and compact design. Compared to other PIMs, Fuji Electric's offering is renowned for its ruggedness and consistent performance, a critical factor for industrial automation equipment.

If your application requires higher power or more advanced features, you may want to explore our comprehensive range of IGBT modules or contact our technical team to discuss a tailored solution for your specific power conversion needs.