7MBR100VX120-54 Fuji Electric 1200V 100A 7-Pack IGBT Module

Content last revised on November 22, 2025

7MBR100VX120-54 | 1200V 100A PIM IGBT Module | Fuji Electric

Product Overview: Efficiency and Integration for Modern Motor Drives

The 7MBR100VX120-54 is a highly integrated Power Integrated Module (PIM) from Fuji Electric's V-Series, engineered for superior efficiency in compact motor control systems. This module provides a complete power stage solution with key specifications of 1200V, 100A, and a typical VCE(sat) of just 1.70V. Its core benefits include a significant reduction in system component count and minimized conduction power losses. By integrating the rectifier, inverter, and brake chopper, this 7-in-1 module directly addresses the need for simplified power stage design, reducing both assembly time and PCB complexity. For designers of compact AC drives up to 37 kW, the 7MBR100VX120-54 offers an optimal balance of power density and high operational efficiency.

Key Parameter Overview

Decoding the Electrical & Thermal Specs for Optimal Drive Performance

The technical specifications of the 7MBR100VX120-54 are optimized for demanding industrial applications. The parameters are grouped by function to facilitate system-level analysis and design.

Download the 7MBR100VX120-54 datasheet for detailed specifications and performance curves.

Application Scenarios & Value

System-Level Advantages in Compact Motor Control and Power Conversion

The 7MBR100VX120-54 is expertly suited for power conversion systems where efficiency, power density, and reliability are paramount. Its primary application is in AC motor controllers and Variable Frequency Drives (VFDs), which are fundamental components in industrial automation, HVAC systems, and pumps.

Consider the engineering challenge of designing a compact VFD for a conveyor system that must operate within a confined, non-ventilated control cabinet. Here, thermal management is a critical design constraint. The module's exceptionally low VCE(sat) of 1.70V directly reduces conduction losses—the primary source of heat during steady-state operation. This lower heat generation allows engineers to specify a smaller, more cost-effective heatsink, thereby reducing the overall system size and bill of materials (BOM). The 7-in-1 integration further shrinks the design by eliminating the need for a separate rectifier module, simplifying both the PCB layout and the assembly process. What is the benefit of a 7-in-1 PIM? It significantly reduces component count and simplifies PCB layout.

For systems with different power requirements, this module is part of a scalable family. For lower power applications requiring similar integration, the 7MBR50VP120-50 provides a 50A solution, while systems demanding higher output can utilize the 7MBR150VR120, rated for 150A.

Technical Deep Dive

Inside the V-Series PIM: A Closer Look at Low-Loss Technology and Integrated Design

The performance of the 7MBR100VX120-54 is rooted in Fuji's V-Series IGBT technology, which is specifically engineered to optimize the trade-off between conduction losses (VCE(sat)) and switching losses (Eoff). For motor drive applications, which typically operate at moderate switching frequencies (2-15 kHz), conduction losses are a dominant factor in overall system efficiency. This module's low VCE(sat) is a direct result of this targeted silicon-level optimization. Think of it like tuning an engine for maximum fuel efficiency at its most common cruising speed; the V-Series IGBT is optimized to waste minimal energy in the state where it spends most of its operational life.

Furthermore, the PIM construction provides inherent reliability benefits. By co-packaging the rectifier, inverter, and brake circuits on a single Alumina (Al2O3) Direct Bonded Copper (DCB) substrate, the module ensures a simplified thermal interface to a single heatsink. This monolithic approach to thermal management avoids the complexities of balancing multiple thermal paths often found in discrete solutions, leading to more predictable performance and improved system longevity.

Frequently Asked Questions (FAQ)

How does the typical VCE(sat) of 1.70V on the 7MBR100VX120-54 impact thermal design in a VFD?

A lower VCE(sat) directly correlates to lower conduction power loss (P_cond = VCE(sat) * Ic). With less power being dissipated as heat, the required performance from the cooling system is reduced. This allows engineers to either lower the operating temperature for increased reliability or use a smaller, less expensive heatsink to achieve a more compact and cost-effective final design.

What are the primary assembly and reliability advantages of using a 7-in-1 PIM like the 7MBR100VX120-54 over a discrete component solution?

The primary advantage is simplification. A 7-in-1 PIM reduces component count, which minimizes sourcing, inventory, and placement costs during manufacturing. It also drastically simplifies the PCB layout and power routing. From a reliability standpoint, fewer solder joints and interconnections reduce potential points of failure, while the integrated thermal design ensures more uniform temperature distribution across all power stages.

How can the integrated NTC thermistor be used to enhance system protection?

The built-in NTC thermistor provides a real-time analog voltage signal that corresponds to the module's internal temperature. The drive's controller can monitor this signal to implement over-temperature protection. If the temperature exceeds a predefined safe limit (e.g., due to fan failure or overload), the controller can trigger an alarm, reduce the output current (derating), or initiate a complete shutdown to prevent catastrophic failure of the IGBT module.

System Design & Integration

To ensure optimal performance and long-term reliability for the 7MBR100VX120-54, careful attention to the gate drive and thermal interface is essential. A properly designed gate drive circuit providing the recommended gate-emitter voltage (typically +15V for turn-on, -8V to -15V for turn-off) is critical for achieving specified switching characteristics and preventing spurious turn-on. Additionally, using a high-quality thermal interface material (TIM) between the module's baseplate and the heatsink is vital to minimize thermal resistance and ensure efficient heat extraction from the power silicon. For detailed application guidance, including gate drive design recommendations and thermal interface considerations, consulting the official manufacturer's application notes is strongly advised.

For detailed quoting or to discuss how the 7MBR100VX120-54 fits into your power conversion design, please contact our technical sales team for engineering support.