The B340B-13-F is a Schottky barrier rectifier manufactured by Diodes Incorporated, with an output rating of 40V and 3A. It is composed of a Silicon substrate, an anode and cathode with metal contacts and a guard ring to reduce leakage current, and a Schottky barrier structure. The Schottky barrier structure allows the device to switch quickly with low forward voltage drop, enabling high power efficiency. The device is suitable for use as a low-voltage, high-speed rectifier in applications such as switch-mode power supplies, automotive circuits, phase-control circuits, and low-noise circuits.