Mitsubishi QM100HA-H IGBT Module

The Engineering Edge of the QM100HA-H IGBT Module

Content last revised on October 26, 2025.

M1. QM100HA-H: A 600V, 100A IGBT Module Engineered for High-Reliability Power Conversion

M2. Introduction & Key Highlights

The Mitsubishi QM100HA-H is an insulated IGBT module engineered for robust performance and thermal stability in demanding power switching applications. This device integrates a single IGBT in a standard industrial housing, delivering a strategic balance of efficiency and durability. With core specifications of 600V | 100A | VCE(sat) of 2.7V (max), its primary engineering benefits are excellent thermal transfer and consistently low conduction losses. The module's design directly addresses the need for reliable power stages in equipment subject to continuous operation. For industrial AC motor control systems requiring dependable performance under 400V, the QM100HA-H's thermal characteristics make it a highly suitable choice.

B3. Key Parameter Overview

Decoding the Specs for Thermal and Electrical Stability

The electrical characteristics of the QM100HA-H are tailored for efficient power handling in medium-frequency applications. The low collector-emitter saturation voltage (VCE(sat)) is a critical parameter, as it directly governs the amount of power dissipated as heat during the 'on' state. A lower VCE(sat) means less energy is wasted, which simplifies thermal management and allows for more compact heatsink designs. The module's thermal resistance from junction to case (Rth(j-c)) of 0.2 °C/W further ensures that the heat generated can be effectively evacuated from the semiconductor junction, a cornerstone of long-term operational reliability.

Download the QM100HA-H datasheet for detailed specifications and performance curves.

B2. Application Scenarios & Value

Achieving System-Level Benefits in Industrial Motor Drives and Power Supplies

The QM100HA-H is optimally positioned for power conversion systems where reliability and thermal efficiency are paramount. Its 100A current rating and robust thermal design make it a strong candidate for the inverter stage of a Variable Frequency Drive (VFD) used in industrial automation, such as controlling conveyor belts, pumps, and fans. In these applications, the ability to handle continuous load currents without excessive heat generation is critical for system longevity. The 2500V isolation voltage provides a crucial safety margin, electrically isolating the control circuits from the high-power stage, which is essential for meeting industrial safety standards like IEC 61800-5-1.

Consider a mid-sized AC motor control application. The QM100HA-H's VCE(sat) of 2.7V at its nominal 100A current directly translates to lower conduction losses compared to older generation IGBTs. This reduction in waste heat not only improves overall system efficiency but also allows engineers to potentially specify a smaller, more cost-effective heatsink, reducing the final assembly's size, weight, and cost. While this module is well-suited for a wide range of applications, for systems demanding higher current capacity, the QM150DY-24 offers a 150A rating within a similar application class.

B5. Industry Insights & Strategic Advantage

Meeting the Demand for Energy Efficiency and System Longevity

In an industrial landscape increasingly focused on reducing total cost of ownership (TCO) and meeting stricter energy efficiency mandates, component selection plays a pivotal role. The QM100HA-H aligns with these strategic goals by focusing on fundamental electrical and thermal performance. The module's design, while not based on the latest trench-gate structures, represents a mature and highly reliable platform. This reliability is a key asset in applications like UPS (Uninterruptible Power Supply) systems and welding power supplies, where unplanned downtime can lead to significant financial losses. The emphasis on a low Rth(j-c) value is a testament to a design philosophy that prioritizes efficient heat extraction, directly contributing to a longer operational lifespan by minimizing thermal stress on the IGBT die. By delivering dependable performance, the QM100HA-H enables the design of power systems that are not only efficient but also built to last.

B7. Engineer's FAQ

What is the primary benefit of the 2.7V maximum VCE(sat) rating?
A low VCE(sat) directly minimizes conduction power loss (P = VCE(sat) * IC), leading to higher inverter efficiency and reduced heat generation. This simplifies the thermal design, potentially allowing for a smaller heatsink and a more compact, cost-effective overall system.

How does the 0.2 °C/W thermal resistance impact system design?
This value signifies efficient heat transfer from the semiconductor junction to the module's baseplate. For a design engineer, this means the device can handle higher power dissipation for a given junction temperature limit or run cooler under a nominal load, which significantly enhances the system's long-term reliability and operational stability.

Is the QM100HA-H suitable for high-frequency switching applications?
The datasheet provides turn-on (ton), storage (ts), and turn-off (tf) times of 0.5µs, 2.0µs, and 0.4µs respectively under specified test conditions. These characteristics make it well-suited for low to medium frequency applications such as motor drives and welders, typically operating in the range of a few kHz up to 20 kHz. For applications requiring significantly higher switching frequencies, designers should carefully analyze the switching losses (Eon/Eoff) to ensure they do not dominate the thermal budget.

From a strategic standpoint, the QM100HA-H represents a commitment to proven technology, offering a reliable and cost-effective solution for power systems where durability and consistent thermal performance are the primary engineering drivers. Its balanced specifications provide a solid foundation for industrial applications that demand long-term, uninterrupted operation.