Content last revised on June 15, 2026
Fuji Electric 2MBI300VH-170-50 IGBT Module | 1700V 300A High-Speed Dual Switch
The 2MBI300VH-170-50 is a specialized high-speed power module designed to address the specific efficiency challenges of 1700V power electronic systems. By optimizing the balance between conduction and switching losses, this module provides 1700V | 300A of capacity with a typical Vce(sat) of 2.55V. Key benefits include significantly reduced turn-off energy dissipation and superior thermal cycling reliability under heavy industrial loads. For 690V industrial motor drives where thermal management is constrained by high switching frequencies, this 1700V module is the optimal choice.
Key Parameter Overview
Decoding Technical Specifications for System-Level Efficiency
To support high-fidelity engineering decisions, the following technical data is extracted directly from the official Fuji Electric documentation. The 2MBI300VH-170-50 belongs to the V-Series, utilizing a Field Stop (FS) structure optimized for high-speed switching frequencies, which is a critical differentiator for modern power conversion architectures.
| Functional Group | Parameter Descriptor | Value / Rating |
|---|---|---|
| Maximum Ratings | Collector-Emitter Voltage (Vces) | 1700V |
| Continuous Collector Current (Ic) | 300A | |
| Pulsed Collector Current (Icp) | 600A | |
| Electrical Characteristics | Collector-Emitter Saturation Voltage (Vce sat) | 2.55V (Typical) |
| Gate-Emitter Threshold Voltage (Vge th) | 6.0V to 7.5V | |
| Turn-off Energy Loss (Eoff) @ Tj=125°C | Optimized for High-Speed Switching | |
| Thermal & Isolation | Junction-to-Case Thermal Resistance (Rth j-c) | 0.075 °C/W (IGBT) |
| Isolation Voltage (Viso) | 4000V AC (1 minute) |
Download the 2MBI300VH-170-50 datasheet for detailed specifications and performance curves.
Application Scenarios & Value
Optimizing Power Density in 690V Industrial Grids
Engineers designing high-power converters for 690V AC line voltages often struggle with the narrow safety margin provided by 1200V components. The 2MBI300VH-170-50 provides the necessary voltage overhead while maintaining the switching performance typically reserved for lower-voltage modules. This is particularly relevant for Variable Frequency Drives (VFD) and renewable energy inverters where pulse-width modulation (PWM) frequencies exceed 5 kHz.
Consider a large-scale industrial pump system utilizing a three-level inverter topology. The 300A current rating allows for high torque at start-up, while the low thermal resistance of 0.075 °C/W ensures that heat is effectively moved to the liquid-cooled or forced-air heatsink. By utilizing this module, designers can achieve a more compact footprint without risking over-temperature failures during peak load cycles. For systems requiring higher current handling in a similar voltage class, the related 6MBI450V-170-50 offers a Vces of 1700V with a six-pack configuration, while the 2MBI300U4H-170 provides an alternative based on the U4 technology platform.
Technical & Design Deep Dive
The Field Stop (FS) Advantage in High-Speed Architectures
The "VH" designation in the 2MBI300VH-170-50 signifies a chip architecture tuned for high-frequency operation. Traditional 1700V IGBTs often suffer from a "tail current" during the turn-off phase, which generates significant heat. The V-Series Field Stop technology implements a thin-wafer process and an n-type buffer layer. This acts like a high-performance brake on a highway—it allows the current to drop to zero much faster than older non-punch-through (NPT) designs, effectively slashing switching losses.
Furthermore, the 2MBI300VH-170-50 incorporates a Soft-Recovery Diode (FWD) with optimized carrier injection. In a typical motor drive application, the anti-parallel diode must handle the inductive kickback current. This module's diode is engineered to minimize dv/dt noise and voltage spikes, which reduces the EMI filtering requirements at the system level. To understand the broader impact of these technologies, engineers can explore our guide on how an IGBT works and how it serves as the backbone of high-efficiency power systems.
FAQ
How does the high-speed optimization of the 2MBI300VH-170-50 affect its thermal design compared to standard V-series modules?
The high-speed optimization specifically reduces the Eoff (turn-off energy). This allows the system to operate at higher switching frequencies with the same thermal envelope or, conversely, to run cooler at standard frequencies. The 0.075 °C/W thermal resistance is a critical spec here; it means that for every 100W of lost energy, the junction temperature only rises 7.5°C above the case temperature, allowing for significantly higher power density.
What is the primary benefit of the 4000V AC isolation rating for this 1700V module?
Enhanced safety and compliance in harsh industrial environments. Since the 2MBI300VH-170-50 is often used in 690V applications where transient overvoltages are common, the 4000V AC isolation provides a robust safety barrier between the high-voltage power stage and the low-voltage control circuitry, ensuring IEC 61800-5-1 compliance for motor drive systems. For more information on maintaining reliability, see our guide on optimizing Vce(sat) and switching losses.
For engineering teams focused on long-term reliability and thermal headroom, the 2MBI300VH-170-50 offers a balanced feature set that prioritizes operational stability. By minimizing switching transients and maximizing carrier extraction speed, Fuji Electric has created a module that empowers designers to push the limits of power density in high-voltage industrial applications. Request a technical review or check availability through our sales engineering team today.
