The 1N5551 is a standard recovery glass rectifier in a voidless, hermetically sealed package, qualified for military and high-reliability use. It features a working peak reverse voltage of 400 V and a minimum breakdown voltage of 440 V. The device handles an average rectified forward current of 5 A and has a maximum forward voltage of 1.2 V at a peak forward current of 9 A. It exhibits a maximum reverse current of 1.0 µA and a reverse recovery time of 2.0 µs. Due to its robust construction and controlled avalanche characteristics, it is well-suited for general rectifier applications such as bridges, half-bridges, and catch diodes in demanding environments.