Content last revised on February 13, 2026
Fuji Electric 2MBI100L-120 | 1200V 100A High-Speed IGBT Module
Engineers often face a difficult trade-off between switching speed and conduction losses in high-voltage industrial applications. The 2MBI100L-120, a specialized dual IGBT module from Fuji Electric, addresses this challenge by optimizing the balance between Vce(sat) and switching energy, ensuring high efficiency in high-frequency environments. For 1200V power systems where thermal management is as critical as electrical performance, this module provides a reliable 100A foundation for long-term operational stability.
Top Specs: 1200V | 100A | Vce(sat) 2.1V (typ)
Key Benefits: Reduced switching losses for high-frequency operation; Isolated base for simplified thermal mounting.
What is the primary benefit of its high-speed switching capability? It significantly minimizes power dissipation during transition phases, allowing for higher PWM frequencies without overheating. For 400V-line industrial drives requiring high switching efficiency, the 2MBI100L-120 is the optimal choice.
Frequently Asked Questions
Addressing Core Engineering Concerns for 1200V Systems
How does the 2.1V Vce(sat) typical rating influence system-level efficiency in VFD applications?
In a Variable Frequency Drive (VFD), the 2.1V saturation voltage directly dictates the conduction losses when the IGBT is in the "on" state. By maintaining a low Vce(sat), the 2MBI100L-120 reduces the heat generated during the power cycle, which simplifies Thermal Management and potentially reduces the size of the required heatsink. This efficiency is crucial for maintaining IEC 61800-3 compliance regarding energy loss standards.
What is the impact of the 1200V Vces rating on 480V AC line voltage stability?
A 1200V collector-emitter voltage provides a robust safety margin for 480V AC systems, where peak voltages can reach approximately 680V. This overhead is essential for protecting the silicon against voltage spikes and inductive kickback during rapid switching, ensuring the Safe Operating Area is never compromised during transient events.
Does the 2MBI100L-120 support high-frequency PWM above 15kHz?
Yes, as part of Fuji Electric's high-speed series, this module is designed to handle higher switching frequencies more effectively than standard IGBT Modules. However, engineers must carefully calculate the total power loss (conduction + switching) to ensure the junction temperature remains within the specified limits under high-frequency operation.
Key Parameter Overview
Decoding the Specs for Enhanced Switching Reliability
| Technical Specification | Official Rating / Value | Design Significance |
|---|---|---|
| Collector-Emitter Voltage (Vces) | 1200V | High voltage ceiling for 440V/480V AC line systems. |
| Continuous Collector Current (Ic) | 100A (at Tc=25°C) | Defines the continuous load handling for Motor Drive systems. |
| Saturation Voltage (Vce(sat)) | 2.1V (Typical) | Lower conduction losses, leading to improved thermal efficiency. |
| Switching Times (ton / toff) | 1.2μs / 1.5μs (Typical) | Enables efficient high-speed PWM control in inverters. |
| Isolation Voltage (Viso) | 2500V AC (1 min) | Ensures safety and signal integrity between power and control stages. |
Download the 2MBI100L-120 datasheet for detailed specifications and performance curves.
Technical Deep Dive
Switching Efficiency and Loss Reduction in the Fuji "L" Series
The internal architecture of the 2MBI100L-120 utilizes a refined planar gate structure designed to minimize the Miller effect during high-speed transitions. Think of the IGBT gate as a precision valve: a "slow" valve causes fluid (current) to leak during the transition, wasting energy. The high-speed response of this Fuji Electric module acts like a high-performance snap-action switch, spending as little time as possible in the high-resistance transition zone. This characteristic is vital for reducing Switching Loss, which typically accounts for the majority of heat generated in high-frequency power supplies.
To further enhance Thermal Management, the module features an isolated copper base plate. This design eliminates the need for individual isolation washers, allowing for a more direct thermal path to the heatsink. When compared to discrete components, the integrated dual-pack configuration of the 2MBI100L-120 significantly reduces parasitic inductance, which is a common cause of voltage ringing and EMI in UPS (Uninterruptible Power Supply) systems. Understanding these dynamics is a core part of IGBT module selection for modern high-density power converters.
Application Scenarios & Value
Achieving System-Level Benefits in High-Frequency Power Conversion
The 2MBI100L-120 is a workhorse in the industrial sector, particularly in environments where space and energy efficiency are at a premium. A prime example is the Variable Frequency Drive (VFD) used in industrial conveyor systems. During heavy motor starts, the IGBT Module must handle significant inrush currents while maintaining precise control. The 100A rating ensures it can sustain these starting loads, while the 1200V rating protects against the back-EMF generated when the motor rapidly decelerates.
In the renewable energy sector, specifically for a Solar Inverter, the 2MBI100L-120 excels in the DC-to-AC conversion stage. Its ability to operate efficiently at higher frequencies allows for the use of smaller inductive filters, reducing the overall footprint and Total Cost of Ownership (TCO) of the system. For engineers requiring similar performance but higher current handling for larger 200kW+ systems, the related 2MBI200NB-120 offers a 200A alternative within a similar 1200V framework.
Key applications include:
- AC Drive systems for industrial automation and robotics.
- High-power UPS (Uninterruptible Power Supply) for data centers.
- Industrial Welding Power Supply units requiring rapid current regulation.
- Advanced medical imaging equipment using high-frequency PWM control.
As power electronics evolve toward higher density, the importance of reliable Gate Drive design and robust thermal layouts cannot be overstated. By integrating the 2MBI100L-120 into your power stage, you leverage Fuji Electric's decades of semiconductor expertise to ensure your system meets the demands of Industry 4.0. For further technical guidance on implementing these modules, explore our field guide on how to test an IGBT module to maintain peak system uptime.
