The B5819W is a Schottky Barrier Diode (SBD) from Formosa which is housed in a small SOD-123 package, and meets the European RoHS guidelines for regulating hazardous substances in electronics. It is designed to suppress voltage spikes, protect circuits from ESD and act as a reverse blocking element. In addition, it is ideal for low voltage switching applications due to its low forward voltage drop. The B5819W features a maximum current rating of 500mA and an operating temperature range of -65°C to 150°C. Overall, this device is an excellent choice for high-speed power supply design, transceiver, DC/DC converter, Buck converters and other low voltage switching applications.