The UF4004 is a fast rectifier with a glass-passivated junction, designed for high-speed applications. It is rated for a maximum repetitive reverse voltage of 400 V and an average rectified forward current of 1.0 A. Key performance characteristics include a fast reverse recovery time of 50 ns and a maximum forward voltage of 1.0 V at its rated current. The device can withstand a non-repetitive peak forward surge current of 30 A and operates over a junction temperature range of -65°C to +150°C, ensuring high reliability.