56V 5W 1N5370B Zener Diode (5-Piece Pack)

At 56V, the 1N5370B sits well into higher-voltage protection territory, used in power supply surge clamping, crowbar overvoltage circuits, and higher-voltage reference applications where lower-voltage parts in this series simply aren't rated high enough. Its 5W power dissipation keeps it functional under real transient current at this voltage level, rounding out a broad spread of zener voltage options from this series that covers everything from low-voltage logic protection up through serious higher-voltage power circuits.