High-Performance 1200V 40A IGBT7 Power Transistor: Infineon IHK40N120R5 for Efficient Switching Applications
The relentless pursuit of higher efficiency and power density in modern power electronics is driving the adoption of advanced semiconductor technologies. At the forefront of this evolution is the Infineon IHW40N120R5, a 1200V, 40A IGBT7 power transistor engineered to set a new benchmark for performance in demanding switching applications.
This seventh-generation IGBT leverages a micro-pattern trench (MPT) technology that fundamentally optimizes the trade-off between conduction losses and switching losses. The result is a device that offers an exceptionally low VCE(sat) of 1.35V (typical at 25°C), which directly translates to reduced power dissipation during the on-state operation. Simultaneously, its turn-off losses are significantly minimized, enabling higher switching frequencies without the penalty of excessive heat generation. This combination is crucial for increasing the power density of systems, allowing designers to build smaller, more efficient converters and inverters.
A key feature of the IGBT7 technology is its improved robustness and controllability. The device exhibits a smooth switching behavior with minimal ringing, which reduces electromagnetic interference (EMI) and simplifies the design of filtering components. Its positive temperature coefficient of the saturation voltage facilitates easier paralleling of multiple devices for higher current capabilities, ensuring stable current sharing and operational reliability.
The IHW40N120R5 is particularly suited for a wide array of high-power applications where efficiency and reliability are paramount. These include:
Solar and photovoltaic inverters

Uninterruptible Power Supplies (UPS)
Industrial motor drives and controls
Welding equipment
Induction heating systems
The module also integrates an optimized reverse conduction Emitter Controlled Diode, which provides soft reverse recovery characteristics. This further enhances the overall efficiency of the system and reduces stress on the switch, contributing to longer operational life and higher system reliability.
ICGOOODFIND: The Infineon IHW40N120R5 IGBT7 represents a significant leap in power semiconductor technology, delivering an optimal balance of low losses, high efficiency, and robust switching performance. It is an ideal solution for engineers aiming to push the boundaries of power density and energy efficiency in next-generation 1200V applications.
Keywords: IGBT7 Technology, Low VCE(sat), High Efficiency, Power Density, Robust Switching
