Content last revised on January 25, 2026
CM600HA-24H: Engineering High-Reliability Power Conversion
A Deep Dive into the 1200V, 600A Single IGBT Module
Executive Summary: Key Engineering Features
The Mitsubishi CM600HA-24H is a high-power single IGBT module engineered for superior thermal stability and long-term reliability in demanding inverter systems. It delivers a robust performance profile defined by key specifications: 1200V | 600A | VCE(sat) of 2.7V (typ). This design provides two critical engineering benefits: significantly reduced conduction losses and enhanced thermal performance. The module directly addresses the challenge of achieving both high power density and operational longevity in industrial applications. For systems requiring robust performance under high cyclic loads, the CM600HA-24H's low thermal impedance design provides an optimal foundation for reliable thermal management.
Application Scenarios & Value
System-Level Benefits in High-Power Industrial Drives
The CM600HA-24H is engineered for high-stress applications where consistent performance and long-term reliability are non-negotiable. Its primary value is demonstrated in systems like large-scale Variable Frequency Drives (VFDs), industrial motor controls, and high-capacity Uninterruptible Power Supplies (UPS). In a VFD controlling a multi-megawatt motor, for instance, minimizing power loss is critical. The module's typical VCE(sat) of 2.7V at its nominal 600A rating directly translates to lower on-state power dissipation. This reduction in waste heat allows designers to specify smaller, more cost-effective heatsinks or increase the system's power output within the same thermal envelope, a key aspect of effective Thermal Management.
For designers working on systems with different power requirements, the H-series offers scalability. While the CM600HA-24H is ideal for 600A applications, the related CM400HA-24H provides a solution for lower current needs, whereas the CM1000HA-24H is available for systems demanding higher current handling capabilities.
Key Parameter Overview
Decoding the Specs for Enhanced Thermal Reliability
The technical specifications of the CM600HA-24H are foundational to its performance in high-power electronics. The parameters below have been selected to highlight the module's capacity for efficiency and robustness.
| Parameter | Value | Engineering Significance |
|---|---|---|
| Collector-Emitter Voltage (VCES) | 1200V | Provides substantial voltage margin for 400V/480V AC line applications, ensuring reliability against voltage transients. |
| Collector Current (IC) | 600A | Enables high power throughput for large motor drives and inverters. |
| Collector-Emitter Saturation Voltage (VCE(sat)) | 2.7V (typ) / 3.6V (max) @ IC=600A | Directly impacts conduction losses; a lower value signifies higher operational efficiency and reduced heat generation. |
| Thermal Resistance (Rth(j-c)) | 0.042 °C/W (IGBT) | A critical measure of heat transfer efficiency. This low value allows the junction to run cooler, enhancing device lifetime. |
| Short Circuit Withstand Time (tsc) | 10µs (VCc=600V, VGE=15V, Tj=125°C) | Defines the module's ruggedness, providing critical time for protection circuits to react during a fault condition. |
| Isolation Voltage (Visol) | 2500V (AC, 1 minute) | Ensures high electrical isolation between the power circuit and the mounting heatsink, simplifying system safety compliance. |
Download the CM600HA-24H datasheet for detailed specifications and performance curves.
Technical Deep Dive
The Engineering Behind Low Thermal Resistance
The thermal resistance from junction to case, Rth(j-c), of 0.042 °C/W is a defining characteristic of the CM600HA-24H. This parameter is not just a number; it is the primary indicator of how effectively heat, the main byproduct of power conversion, can be evacuated from the active silicon chip to the heatsink. Think of it like the width of a highway: a lower Rth(j-c) is a wider, multi-lane expressway allowing a high volume of heat "traffic" to flow away smoothly. A higher value would be a narrow, congested road causing a "traffic jam" of heat, leading to a rapid rise in the junction temperature (Tj).
This efficiency is a result of the module's internal construction, including the materials and processes used to attach the silicon die to the Direct Bonded Copper (DBC) substrate and the substrate to the isolated metal baseplate. For a system designer, this low thermal resistance provides a crucial advantage. It creates a larger thermal margin, meaning the device can handle higher power dissipation or operate more reliably at elevated ambient temperatures without exceeding its maximum junction temperature limit of 150°C. This is fundamental to building robust power systems that can withstand real-world industrial environments and load variations, directly impacting the system's Safe Operating Area (SOA) and overall longevity.
Frequently Asked Questions (FAQ)
How does the 2.7V typical VCE(sat) of the CM600HA-24H benefit my inverter design?
A lower VCE(sat) directly reduces the power lost as heat during the IGBT's on-state (conduction losses). For a 600A load, this lower voltage drop results in significant efficiency gains, reducing the load on the cooling system and potentially lowering the total cost of ownership through energy savings.
What is the significance of the 10µs short-circuit withstand time?
This rating indicates the module's robustness. It guarantees the IGBT can survive a direct short-circuit for 10 microseconds without failing, providing a critical window for the gate drive protection circuitry to detect the fault and safely shut down the device. This is a key parameter for ensuring system safety and preventing catastrophic failures in applications like Servo Drives.
Can the CM600HA-24H be paralleled for higher current applications?
Yes, IGBT modules like this can be paralleled, but it requires careful design considerations. The datasheet provides information on the distribution of VCE(sat), and designers must ensure symmetric layout for busbars and gate drive signals to achieve proper current sharing. A comprehensive understanding of voltage, current, and thermal management is essential for reliable paralleling.
What does the 'H-Series' designation signify in Mitsubishi IGBT modules?
The H-Series from Mitsubishi typically indicates a high-reliability generation of IGBTs designed for demanding industrial applications, often featuring an optimized balance between low conduction losses and switching performance for use in a wide range of inverter and converter designs.
Strategic Implications for System Design
Integrating the CM600HA-24H into a power system is a strategic decision that prioritizes long-term operational reliability and efficiency. The module's robust thermal characteristics and proven H-series technology provide the engineering foundation needed to meet stringent industrial standards. By designing with a component that excels at managing thermal stress, engineers can develop more compact, powerful, and durable power conversion systems, offering a distinct competitive advantage in the marketplace.
