The MMBD4148SE is a switching diode manufactured by LGE with a SOT-23 package. It has a voltage rating of 100V and a power rating of 350mW. It also has a junction temperature of +150? and a forward voltage drop of 1V at 10mA. This switching diode has a reverse recovery time of 4ns at a reverse current of 5uA when at 75V, and has a forward current rating of 200mA. It is ROHS certified.