The B5819WS is a Schottky barrier diode (SBD) with a SOD-323 package size manufactured by Starsea. It is compliant with the Restriction of Hazardous Substances (RoHS) directive. It has a maximum working voltage of 28V, a forward current of 30mA, a reverse current of 0.1µA at a reverse voltage of 28V and a temperature range of -55°C to 150°C. It provides low power loss and a fast switching time. It is suitable for various electronic applications including power management, protection, and signal conversion in telecommunications, computers, automotive, and industrial electronics.