1N5408 is a member of the 1N5400 series, which is a family of popular 3 A general-purpose silicon rectifier diodes. The blocking voltage of the series varies according to diode number, 1N5408 denotes 1000 volts. It is commonly used in AC Adapters, which is used in common household appliances. A general-purpose diode is a two-terminal semiconductor device. It allows current to pass only in one direction, from its anode to cathode.
