Content last revised on March 9, 2026
Mitsubishi CM1200DB-34N | Robust 1700V Half-Bridge IGBT for High-Power Conversion
The Mitsubishi CM1200DB-34N is a high-performance N-Series IGBT module engineered for the rigorous demands of high-power industrial applications. Featuring a half-bridge configuration with impressive 1700V and 1200A ratings, this module provides a dependable and efficient power switching solution for systems operating on higher voltage lines, such as 690V AC. It is specifically designed to deliver exceptional reliability and low power loss in applications like medium-voltage motor drives, large-scale renewable energy inverters, and grid infrastructure.
Technical Deep Dive: The Core of Performance
The exceptional capability of the CM1200DB-34N stems from Mitsubishi's advanced power semiconductor technologies, which directly translate into tangible system-level benefits.
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CSTBT™ (Carrier Stored Trench-gate Bipolar Transistor) Technology
At the heart of this module lies Mitsubishi's proprietary CSTBT™ technology. Unlike conventional trench-gate structures, CSTBT™ incorporates a carrier-stored layer on the n-drift region, which significantly reduces the collector-emitter saturation voltage (Vce(sat)). For system designers, this means lower conduction losses, reduced heat generation, and ultimately, higher overall inverter efficiency. This allows for smaller heatsinks or increased power output within the same thermal budget.
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Optimized Thermal and Mechanical Design
Reliability over a long operational life is non-negotiable in industrial settings. The CM1200DB-34N utilizes a robust package with an Al-SiC (Aluminum Silicon Carbide) baseplate. This material offers a low Coefficient of Thermal Expansion (CTE) that closely matches the ceramic substrate, drastically improving thermal cycling capability and resistance to mechanical stress from temperature fluctuations. This robust construction ensures the module's integrity even under harsh load cycles, minimizing maintenance and extending system lifespan.
Multi-Dimensional Application Scenarios
The unique characteristics of the Mitsubishi CM1200DB-34N enable it to solve critical challenges across various demanding sectors:
- Medium-Voltage Motor Drives: For large industrial motors in pumps, compressors, and fans operating on 690V AC lines, the 1700V rating provides a critical safety margin against voltage spikes. The low Vce(sat) minimizes energy waste, directly reducing operational electricity costs over the equipment's lifetime.
- Renewable Energy Systems: In large-scale solar and wind power inverters, this module's high current handling and thermal stability are essential. It efficiently manages the fluctuating power from renewable sources, maximizing energy harvest and ensuring grid-feed stability, a cornerstone for modern renewable energy inverters.
- FACTS and Power Quality: In Flexible AC Transmission Systems (FACTS) and active power filters, the module's fast and efficient switching helps stabilize the power grid. Its ability to handle high voltage and current makes it a reliable component for improving power quality and transmission efficiency.
Key Technical Parameters Overview
| Parameter | Value |
|---|---|
| Collector-Emitter Voltage (Vces) | 1700V |
| Collector Current (Ic) | 1200A |
| Collector-Emitter Saturation Voltage (Vce(sat)) @ 1200A, 125°C | 2.4V (Typ.) |
| Configuration | 2-in-1 (Half-Bridge) |
| Isolation Voltage (Viso) | 6000 Vrms |
For complete specifications, please refer to the official CM1200DB-34N Datasheet.
Comparative Insight and Selection Guidance
Engineers often weigh the CM1200DB-34N against standard 1200V IGBT modules. While a 1200V module may suffice for 400V/480V systems, the 1700V rating of the CM1200DB-34N is the definitive choice for applications built around a 690V AC bus. This higher blocking voltage provides a substantially greater design margin, enhancing system robustness against overvoltage events commonly found in industrial environments. Choosing this module is an investment in system reliability and safety for medium-voltage power conversion.
If your project demands uncompromising performance at higher voltages, this Mitsubishi IGBT module is an industry-leading solution. For a broader view of power modules or to discuss alternatives for different voltage classes, feel free to Explore More IGBT Modules on our website. Our technical team is ready to Contact us for tailored advice to ensure you select the optimal component for your design.
