UF3C120040K3S

UF3C120040K3S is a high-performance silicon carbide (SiC) trench MOSFET manufactured by onsemi, designed for efficient power conversion in demanding industrial and automotive applications. This device features a nominal drain-source voltage rating of 1200 V and a continuous drain current capability of up to 40 A, enabling robust operation under high-voltage conditions while minimizing conduction losses. Its low on-resistance (RDS(on)) of typically 55 mΩ at 25°C ensures high energy efficiency, especially in high-frequency switching environments. The trench gate structure enhances the device’s switching performance by reducing gate charge (Qg) and improving thermal stability. With a total gate charge of approximately 75 nC, it supports fast switching speeds that reduce switching losses—critical for applications requiring high-frequency operation such as DC-DC converters, inverters, and motor drives. The SiC technology inherently offers superior thermal conductivity compared to traditional silicon-based MOSFETs, allowing for higher operating junction temperatures (up to 175°C), which improves reliability and reduces cooling requirements. This component is optimized for use in electric vehicle (EV) onboard chargers, solar inverters, and industrial power supplies where compact design, high efficiency, and long-term durability are essential. It also meets stringent safety and compliance standards, including AEC-Q101 for automotive qualification, making it suitable for harsh environments with vibration, temperature cycling, and electrical stress. The UF3C120040K3S includes built-in protection features such as avalanche ruggedness and safe operating area (SOA) enhancement, which provide resilience against transient overloads and short-circuit events. Its TO-247-4L package offers improved thermal dissipation and mechanical robustness, supporting easy integration into existing PCB layouts without requiring significant redesign. Additionally, the device is lead-free and RoHS-compliant, aligning with environmental regulations across global markets. Engineered for modern power systems, this MOSFET delivers a balance of high voltage tolerance, low conduction and switching losses, and excellent thermal performance—making it ideal for next-generation power electronics where efficiency, size reduction, and reliability are paramount.