Content last revised on February 10, 2026
The Engineer's Guide to the 7MBR15SA140E-01 IGBT Module
Optimizing Power Density and Reliability in Compact Motor Drives
The 7MBR15SA140E-01 is a highly integrated 7-in-1 Power Integrated Module (PIM) from Fuji Electric, engineered to simplify the power stage design of compact, low-power industrial systems. It delivers a robust 1400V | 15A rating within a single, efficient package. Key engineering benefits include a significant reduction in PCB complexity and enhanced system reliability through its consolidated component structure. This module directly addresses the challenge of designing space-constrained and thermally efficient power conversion systems by integrating the input rectifier, brake chopper, and inverter into one component. For small motor drives requiring high voltage headroom and streamlined assembly, the 7MBR15SA140E-01 provides an optimal balance of integration and performance.
Key Parameter Overview
Highlighting Core Specifications for Integrated Drive Design
The electrical and thermal characteristics of the 7MBR15SA140E-01 are tailored for high-efficiency power conversion in applications where reliability and board space are critical design constraints. The specifications below underscore its suitability for modern, compact Variable Frequency Drives (VFDs) and servo systems.
| Parameter | Symbol | Condition | Value |
|---|---|---|---|
| Inverter Section (per IGBT) | |||
| Collector-Emitter Voltage | VCES | - | 1400V |
| Continuous Collector Current | IC | TC = 25°C | 15A |
| Collector-Emitter Saturation Voltage | VCE(sat) | IC = 15A, VGE = 15V | 2.7V (Max) |
| Thermal Resistance (Junction-to-Case) | Rth(j-c) | Per IGBT | 1.14 °C/W |
| Brake Section (per IGBT) | |||
| Collector-Emitter Voltage | VCES | - | 1400V |
| Continuous Collector Current | IC | TC = 25°C | 15A |
| Collector-Emitter Saturation Voltage | VCE(sat) | IC = 15A, VGE = 15V | 2.7V (Max) |
| General Characteristics | |||
| Isolation Voltage | Viso | AC, 1 minute | 2500V |
| Operating Junction Temperature | Tj | - | +150°C |
Application Scenarios & Value
System-Level Benefits in Low-Power Industrial Automation
The 7MBR15SA140E-01 is engineered for applications where power density, cost-effectiveness, and reliability are paramount. Its defining feature is the 7-in-1 integration, which consolidates a three-phase converter, a dynamic brake chopper, and a three-phase inverter into a single compact module. This high level of integration offers a decisive advantage for engineers designing compact industrial equipment.
Consider the development of a Variable Frequency Drive (VFD) for a conveyor belt system or an HVAC fan. A key engineering challenge is fitting the entire power stage—rectifier, DC link management, and inverter—onto a small PCB while managing thermal dissipation. The 7MBR15SA140E-01 solves this by replacing up to seven discrete power components and their associated gate drive circuits. This not only shrinks the required board space but also drastically reduces assembly time and potential points of failure. The integrated brake chopper is particularly valuable for applications involving deceleration or overhauling loads, providing a ready-to-use circuit for dissipating regenerative energy and preventing DC bus overvoltage faults. For systems requiring slightly higher current capacity with a similar integrated approach, the 7MBR25SA120-50 provides a 25A alternative.
Frequently Asked Questions
Engineering Insights into the 7MBR15SA140E-01
What is the primary advantage of the 7-in-1 topology in this module?
The main advantage is system simplification. By integrating the AC-to-DC converter, brake chopper, and DC-to-AC inverter into one package, it significantly reduces PCB footprint, component count, and assembly complexity. This leads to a more compact, cost-effective, and reliable final product, especially in small motor drives.
How does the 1400V VCES rating benefit my design?
A 1400V rating provides a substantial safety margin for applications running on 400V to 480V AC lines. This increased voltage headroom enhances the module's robustness against transient voltage spikes from the grid or inductive loads, which is a critical factor for long-term reliability in harsh industrial environments.
What is the function of the integrated brake circuit?
The integrated brake circuit is used for dynamic braking. When a motor decelerates, it acts as a generator, sending energy back to the drive's DC bus. The brake chopper dissipates this regenerative energy as heat through an external resistor, preventing the DC bus voltage from rising to dangerous levels and protecting the drive.
Is a thermistor included in this module?
Yes, the 7MBR15SA140E-01 includes an integrated NTC thermistor. This allows for real-time monitoring of the module's substrate temperature, enabling the system's controller to implement over-temperature protection or thermal rollback strategies, thereby safeguarding the IGBTs and enhancing overall system safety.
From a strategic standpoint, the integration level offered by the 7MBR15SA140E-01 aligns with the industry trend of increasing power density and modularity in drive design. Utilizing such a Power Integrated Module allows engineering teams to focus on control logic and software development, knowing the power stage is pre-optimized for thermal performance and electrical ruggedness, ultimately accelerating time-to-market for new industrial products.
