S4 SMD Diode SOD-123 Hottech 40V 350mA Schottky Diode SD103AW

The SD103AW is a 40V, 350mA surface-mount small-signal Schottky barrier diode manufactured by Guangdong Hottech Industrial Co., Ltd. (Hottech) for low-voltage rectification, fast switching, and reverse polarity protection applications. Housed in a compact surface-mount SOD-123 molded plastic package, this discrete component features a single diode configuration designed to optimize space in high-density circuit boards. It operates with a maximum repetitive peak reverse voltage of 40V and a forward continuous current of 350mA while carrying the package top-side marking code "S4". Engineered with an ultra-fast switching speed, low forward voltage drop, and high surge current capability, this robust device delivers reliable performance across an operating junction temperature range from minus 55 to plus 125 degrees Celsius.