The 1N4148WS switching diode manufactured by Jingdao is an unidirectional switch with 75V and 300mA. It has a voltage rating of 1.25V at 150mA and an ultra-fast switching time of 8ns. It is packaged in a surface-mount SOD-323 case, and is designed to meet the requirements of the RoHS directive. The device is suitable for a wide range of applications, including switching, signal processing, and signal amplification.