STPS4045C-Y

STPS4045C-Y is a high-performance rectifier diode manufactured by STMicroelectronics, designed for efficient power conversion in demanding applications. It features a maximum repetitive peak reverse voltage (VRRM) of 450 V and a continuous forward current rating (IF(AV)) of 4 A, making it suitable for medium-power DC-DC converters, industrial power supplies, and motor drives. The device employs a robust planar technology with low forward voltage drop (VF ≈ 1.2 V at IF = 4 A), ensuring minimal power loss and improved system efficiency. This diode is optimized for fast switching and includes a soft recovery characteristic that reduces electromagnetic interference (EMI) and voltage overshoot during turn-off. Its low junction capacitance and short reverse recovery time (trr < 35 ns) enhance performance in high-frequency switching circuits, such as those found in switch-mode power supplies (SMPS) and renewable energy systems like solar inverters. The thermal design supports reliable operation under high ambient temperatures, with a maximum junction temperature (Tj) of 150°C. Packaged in a TO-220AB surface-mount format, the STPS4045C-Y offers excellent thermal and mechanical stability, facilitating easy integration into printed circuit boards (PCBs). The package also enables efficient heat dissipation through direct mounting on heatsinks or copper planes, improving long-term reliability in high-duty-cycle environments. Enhanced safety features include built-in protection against transient overvoltages and surge currents, meeting stringent IEC standards for electrical stress resilience. The component is ideal for use in consumer electronics, automotive power systems, telecommunications equipment, and industrial automation where compact size, high efficiency, and durability are critical. Its compliance with RoHS and REACH regulations ensures environmental safety and compatibility with modern manufacturing processes. With consistent performance across wide operating conditions, the STPS4045C-Y delivers robust functionality in applications requiring reliable rectification, including battery charging circuits, LED drivers, and power adapters.