12V 5W 1N5349B Zener Diode (5-Piece Pack)

A 12V zener lines up directly with one of the most common DC supply voltages in robotics, automotive electronics, and general battery-powered systems, making it a frequently needed value for overvoltage protection on a 12V rail or for generating a stable 12V reference point in a larger circuit. Its 5W power rating gives it the thermal capacity to handle real clamping current during a transient overvoltage event rather than failing immediately, which matters in protection circuits where the zener needs to survive the very surge it is meant to clamp.