Components Direct offers low cost and high performance Zener Diodes. Zener diodes permits current to flow in the forward direction while also allowing current flow in the reverse direction only if the voltage is above the breakdown voltage.
The zener diode will not permit current during reverse bias when the voltage is below the breakdown voltage, and the diode is constructed by doping in the p-n junction. Zener diodes are used as surge protectors, voltage references, and shunt regulators.