The ROHM RB521VM-40FHTE-17 is an electronic component consisting of a Schottky diode and a rectifier in a single package. It has an operating voltage of 40V, a reverse voltage of 40V, and a forward current of 0.2A. It is housed in a SOD-323FL package and has a UMD2 marking. The Schottky diode is used to prevent reverse currents through the rectifier, while the rectifier further serves to block the flow of reverse currents. This electronic part is widely used in automotive, telecommunications, consumer electronic, and industrial applications.