1N3042B

75Volt, 1Watt Precision Silicon Zener Voltage Regulation Diode, designed for highly stable reference voltage generation, overvoltage line clamping, and power supply surge protection. It handles a clean 1W power dissipation threshold with minimal reverse leakage metrics, housed in a hermetically sealed through-hole axial-leaded DO-41 glass package footprint. Manufactured by Motorola / Fairchild.