This is an ESD SOD-323 RoHS diode manufactured by Ruilongyuan with the model number RLSD32A051V. It is a general purpose diode designed to provide protection from ElectroStatic Discharge (ESD) events. The diode is a SOD-323 package and is RoHS compliant. The maximum working voltage is 32V, the maximum peak reverse current is 0.5A, the maximum average forward current is 200mA, and the maximum power dissipation is 360mW. It has a low leakage current and a high peak pulse power rating, making it suitable for many applications such as computer peripherals, cell phone chargers, hand-held battery operated devices, and medical products.