5.6V 1/2W Zener Diode (5-Piece Pack)

Sitting just above the ubiquitous 5V logic rail, a 5.6V zener gives a protection circuit a little headroom so it doesn't nuisance-clamp during normal 5V operation while still catching a genuine overvoltage event before it climbs much higher. Like the other half-watt parts in this series, it is sized for light signal-level duty, suited to protecting sensor inputs or reference circuits rather than absorbing heavy power-rail surge current.