CM400HA-28H Mitsubishi Electric 1400V 400A Single IGBT Module

Content last revised on February 9, 2026

CM400HA-28H Mitsubishi Electric 1400V 400A Single IGBT Module

Can a single-switch IGBT module maintain high-voltage isolation while delivering 400A of continuous current in heavy-duty industrial environments? Engineers managing high-power DC-link systems often face the challenge of selecting components that provide enough voltage overhead for 600V to 800V applications without the complexity of multi-chip configurations. The CM400HA-28H, a part of the H-Series high-power IGBT Module family, addresses this by offering a robust 1400V collector-emitter voltage rating and a high-dissipation single-switch architecture.

UVP Statement: Delivering a specialized 1400V isolation barrier and 400A current capacity, this module provides the critical safety margin required for high-reliability DC-link architectures where 1200V components may be overstressed.

Top Specs: 1400V | 400A | 2800W Power Dissipation.

Key Benefits: Enhanced voltage overhead for transients and exceptional thermal dissipation via a large baseplate.

Core Insight: This module effectively solves the problem of voltage spikes in inductive loads by providing a 1400V rating, offering a 16% higher safety ceiling than standard 1200V modules. For systems prioritizing thermal margin in heavy industrial drives, this 1400V module is the optimal choice.

Frequently Asked Questions

Addressing Design Challenges and Technical Specifications

How does the 1400V Vces rating of the CM400HA-28H influence design margins in 800V DC-link systems?
In high-power industrial systems, voltage spikes during switching are proportional to the stray inductance. While a standard 1200V module might operate near its breakdown limit during a transient event, the CM400HA-28H provides a 1400V rating. This extra 200V margin allows for more relaxed snubber circuit requirements and reduces the risk of catastrophic failure during high-speed turn-off transitions in Variable Frequency Drives (VFD).

What is the engineering significance of the 0.045 K/W thermal resistance in the HA package?
The thermal resistance Rth(j-c) of 0.045 K/W determines how efficiently heat moves from the silicon junction to the case. To visualize this, imagine a highway: if heat is traffic, a low Rth is like having an eight-lane freeway. It prevents heat from bottlenecking at the junction, allowing the module to dissipate up to 2800W without exceeding its maximum junction temperature. This is critical for maintaining long-term reliability in continuous-duty cycles found in UPS (Uninterruptible Power Supply) systems.

Key Parameter Overview

Decoding Technical Specifications for System-Level Reliability

The following technical data is derived from the official Mitsubishi Electric documentation for the CM400HA-28H.

Download the CM400HA-28H datasheet for detailed specifications and performance curves.

Industry Insights & Strategic Advantage

Navigating the Evolution of Power Conversion Efficiency

As industrial power systems move toward higher efficiency and more compact footprints, the demand for high-reliability single-switch modules like the CM400HA-28H remains strong. While newer technologies like SiC Module offer faster switching speeds, the proven IGBT structure provides a more cost-effective and rugged solution for low-to-medium frequency high-power applications. This module aligns with IEC 61800-3 standards for industrial drives, where electromagnetic compatibility and thermal robustness are non-negotiable.

The strategic advantage of the CM400HA-28H lies in its 1400V rating, which bridges the gap between common 1200V and 1700V classes. This allows designers to optimize their DC-link capacitors and protection circuitry for 800V-900V rails, common in renewable energy grids and large-scale Solar Inverter systems. Furthermore, its HA package is a standard in the industry, simplifying replacement and maintenance in existing cabinets without redesigning the busbar geometry.

For engineers requiring more current capacity in a similar voltage class, the related CM600HA-28H offers a higher collector current of 600A. Understanding these nuances is essential for IGBT Module Selection in mission-critical infrastructure.

Application Scenarios & Value

Achieving Performance Gains in High-Power Industrial Hardware

Engineers often face the challenge of managing high-current inductive loads in Induction Heating and Welding Power Supply systems. In these environments, the CM400HA-28H excels due to its high SCSOA (Short Circuit Safe Operating Area), which allows the module to withstand brief overcurrent conditions without immediate failure. This ruggedness is a direct result of the H-Series chip technology, which prioritizes thermal stability over extreme switching speed.

In a typical Variable Frequency Drive (VFD) application for heavy-duty pumps, the module must handle 400A of current while managing the thermal cycles of starting and stopping. The Rth(j-c) of 0.045 °C/W acts as a thermal buffer, ensuring that the internal IGBT chip temperature stays within the safe range of 150°C. By leveraging a single-switch configuration, designers reduce the number of potential failure points compared to paralleling multiple smaller discrete components.

Beyond motor control, this module is a staple in Electric Vehicle (EV) Inverter test benches and large-scale power conditioning systems. Its 2500V AC isolation rating ensures compliance with safety regulations, protecting the low-voltage control circuitry from the high-voltage power stage. For systems requiring even more sophisticated protection, designers may consider the related PM800HSA120, which features integrated drive and protection logic.

As a professional distributor, we provide high-precision technical data to empower your engineering decisions. For detailed thermal modeling or integration support, refer to our guide on Thermal Management and breakdown analysis.