Content last revised on March 12, 2026
Fuji 1MBI200N-120 | Robust 1200V IGBT for High-Efficiency Power Conversion
The Fuji 1MBI200N-120 is a high-performance single IGBT module engineered for reliability and efficiency in demanding power conversion applications. As a cornerstone of Fuji Electric's N-Series, this module leverages a proven trench gate field-stop technology to deliver an optimal balance between conduction losses and switching performance. It is designed for engineers seeking a robust, thermally efficient solution for systems operating in the medium power range.
Key strengths of this module include:
- Low Conduction Loss: A very low collector-emitter saturation voltage (VCE(sat)) significantly reduces power dissipation during on-state operation, enhancing overall system efficiency.
- High Thermal Conductivity: Built with a high-performance Aluminum Nitride (AlN) DCB substrate, ensuring superior heat transfer away from the die.
- Robust and Reliable: Features a high short-circuit withstand time and a rugged package designed for long-term stability in industrial environments.
- Application Versatility: Ideal for a wide range of applications including industrial motor drives, UPS systems, and welding power supplies.
Key Parameter Overview
The following table provides a snapshot of the critical electrical and thermal characteristics for the Fuji 1MBI200N-120. For a comprehensive list of specifications and performance curves, you can download the 1MBI200N-120 datasheet.
| Parameter | Value |
|---|---|
| Collector-Emitter Voltage (Vces) | 1200 V |
| Continuous Collector Current (Ic) @ Tc=80°C | 200 A |
| Collector-Emitter Saturation Voltage (VCE(sat)) typ. @ Ic=200A | 2.2 V |
| Total Power Dissipation (Pc) | 1130 W |
| Maximum Junction Temperature (Tj max) | 150 °C |
Technical Deep Dive: Engineering for Performance
The performance of the Fuji 1MBI200N-120 is rooted in its intelligent silicon and package design. The N-Series employs a well-established trench gate and field-stop (FS) structure. This combination allows for a thinner silicon die, which is fundamental to achieving a low on-state voltage, or VCE(sat). For the design engineer, this directly translates into lower conduction losses, a critical factor in applications with lower switching frequencies where the IGBT spends a significant portion of its time in the on-state.
Furthermore, effective thermal management is non-negotiable for power module reliability. The module utilizes an Aluminum Nitride (AlN) Direct Bonded Copper (DBC) substrate. Compared to standard Alumina (Al₂O₃) substrates, AlN offers significantly higher thermal conductivity. This results in a low thermal resistance (Rth(j-c)), enabling more efficient heat extraction from the IGBT die to the heatsink. This superior thermal design not only allows the device to operate closer to its maximum current rating but also enhances its power cycling capability and extends its operational lifespan.
Application Scenarios & Value Realized
The specific characteristics of the Fuji 1MBI200N-120 make it an excellent choice for several key power conversion systems:
- Industrial Motor Drives: In Variable Frequency Drives (VFDs), especially those operating below 10 kHz, conduction losses are a primary source of heat. The low VCE(sat) of this module minimizes these losses, reducing heatsink requirements and improving the drive's overall energy efficiency.
- Uninterruptible Power Supplies (UPS): Reliability is paramount in UPS systems. The module's robust design and high short-circuit withstand time provide the durability needed to handle fault conditions, ensuring system integrity and uptime for critical loads.
- Welding and Induction Heating: These applications subject power components to high current pulses and demanding thermal cycles. The excellent thermal performance and high current rating of this IGBT module ensure it can handle these stressful conditions reliably. For engineers exploring similar applications, understanding the core IGBT working principles is crucial.
Frequently Asked Questions (FAQ)
Can the 1MBI200N-120 be paralleled for higher current?
Yes, the Fuji 1MBI200N-120 can be paralleled, but it requires careful design considerations. To ensure proper current sharing, modules with closely matched VCE(sat) values should be selected. It is also essential to implement individual gate resistors for each module to dampen potential oscillations and a symmetrical layout for both power and gate drive connections to balance stray inductances. Failing to implement these measures can lead to current imbalance and potential thermal runaway in one of the modules.
What is the recommended gate drive voltage?
For optimal performance, a gate drive voltage of +15V for turn-on and -10V to -15V for turn-off is recommended. Using a negative turn-off voltage is a best practice as it provides a strong buffer against the Miller effect, preventing parasitic turn-on caused by high dv/dt rates, which is common in inverter topologies. Proper implementation requires robust gate drive design to ensure device reliability. For specific requirements for these or other IGBT modules, please contact our technical team.
