MAL203870479E3 is a Vishay surface-mount Zener diode. It is a sensitive, medium-power device with a maximum power rating of 625 mW. It has a nominal Zener voltage of 47V, a maximum reverse current of 1 µA, and a maximum reverse surge current of 8 A. It features a tight tolerance of ± 5%, a low temperature coefficient of 0.3%, and fast recovery time. It is ideally suited for voltage clamping, general protection, and bias circuits in automotive, industrial, and consumer electronics applications.