Mitsubishi Electric Corporation has introduced sample versions of its fifth-generation silicon carbide (SiC) MOSFET bare dies, developed specifically for electric vehicle powertrains. Sample shipments are scheduled to begin in late June, with the devices targeting traction inverters and eAxle systems used in EVs, plug-in hybrid electric vehicles (PHEVs), and other electrified vehicles.
The new SiC MOSFETs utilize Mitsubishi Electric’s proprietary trench-structure technology and are engineered to reduce power losses compared to previous generations. The company reports that the latest devices offer around 25% lower on-resistance, enabling more efficient power conversion within automotive drivetrain systems.
By lowering conduction losses in traction inverters, the new MOSFETs can help improve overall drivetrain efficiency, allowing better use of battery energy and potentially extending vehicle driving range. The enhanced efficiency also supports the development of smaller, lighter, and more compact powertrain designs.
Mitsubishi Electric says the fifth-generation devices are designed to meet growing demand for higher-performance inverters and integrated eAxle solutions, where greater power density and efficiency are critical. The technology is expected to contribute to both improved system performance and further miniaturization of automotive power electronics.
The company has also implemented manufacturing process improvements aimed at enhancing long-term reliability. These advancements help reduce performance degradation over time and minimize variations in key characteristics such as on-resistance and power loss, ensuring more stable operation throughout the device lifecycle.
With a combination of lower energy losses, improved consistency, and enhanced durability, the new SiC MOSFETs are intended to strengthen the performance and reliability of next-generation xEV inverters and eAxle systems.
Mitsubishi Electric plans to present the fifth-generation SiC MOSFET bare dies at the PCIM Expo & Conference 2026 in Nuremberg, Germany, along with other industry events across Japan, China, and additional global markets, further expanding its silicon carbide solutions for automotive electrification.
