The RSX501LAM20TR is a Schottky rectifier diode manufactured by ROHM. The device has a maximum voltage rating of 20V, a maximum forward voltage drop of 0.5mA, and a maximum reverse current leakage of 1mO. The diode is made from silicon and has a Schottky semiconductor construction. It is typically used in applications such as power rectification, voltage regulation, and power supply protection. It can also be used in automotive applications, such as vehicle braking and lighting systems.