The 1N5921BRLG is a 5A ultrafast high-voltage rectifier diode from ON Semiconductor. It is housed in a RoHS compliant SMA package, and can operate in a voltage range up to 1000V. This device has a maximum forward current of 5A and a reverse leakage current of less than 1mA. The device has fast switching speed, a low forward volt drop, and good thermal stability.