STTH1R04-Y

STTH1R04-Y is a high-performance rectifier diode manufactured by STMicroelectronics, designed for efficient power conversion and management in compact electronic systems. It features a peak repetitive reverse voltage (VRRM) of 400 V and a continuous forward current (IF(AV)) of 1 A, making it suitable for applications requiring reliable operation under moderate to high voltage conditions. The device employs a planar technology with a low forward voltage drop (VF ≈ 1.1 V at IF = 1 A), which enhances energy efficiency and reduces heat generation during operation. This diode is constructed using a robust TO-220AB package, offering excellent thermal performance and mechanical durability. Its design supports both through-hole and surface-mount mounting options, providing flexibility in PCB layout and assembly processes. The STTH1R04-Y also exhibits fast switching characteristics, enabling minimal reverse recovery time (trr < 300 ns), which improves circuit efficiency in high-frequency switching applications such as switch-mode power supplies (SMPS) and DC-DC converters. Key features include a low leakage current (IR < 5 μA at VRRM), ensuring stable operation even under high ambient temperatures, and a wide operating junction temperature range from -55°C to +150°C, making it ideal for industrial, automotive, and consumer electronics environments. The diode’s rugged construction ensures long-term reliability in demanding conditions, including vibration, thermal cycling, and humidity exposure. Common applications include power adapters, battery chargers, motor drives, and industrial control systems where efficient rectification and thermal stability are critical. It is particularly well-suited for use in renewable energy systems—such as solar inverters—and in telecom infrastructure due to its ability to handle transient voltage spikes while maintaining consistent performance. The STTH1R04-Y complies with RoHS standards and is fully lead-free, aligning with modern environmental regulations and sustainable manufacturing practices.