Also normal diodes are jacob millman electronic devices and circuits pdf designed to operate in the breakdown region, but Zener diodes can reliably operate in this region. Zener diodes are widely used in electronic equipment of all kinds and are one of the basic building blocks of electronic circuits.
They are used to generate low power stabilized supply rails from a higher voltage and to provide reference voltages for circuits, especially stabilized power supplies. Current-voltage characteristic of a Zener diode with a breakdown voltage of 17 volts. Temperature coefficient of Zener voltage against nominal Zener voltage. Unless this current is limited by circuitry, the diode may be permanently damaged due to overheating.