Patent ID: 8164154

Claim:
A Schottky barrier diode comprising: a substrate including a first surface and a second surface, the second surface opposite to the first surface; a mesa that is an epitaxial layer formed on a first portion of the first surface of the substrate; a Schottky barrier contact formed on the mesa; an ohmic contact formed on a second portion of the first surface of the substrate, the second portion of the first surface of the substrate located outside the mesa; an anode electrode connected to the Schottky barrier contact; a cathode electrode connected to the ohmic contact, such that both the anode electrode and the cathode electrode are located on the same side of the Schottky barrier diode; an oxide layer disposed on peripheral regions of the mesa and of the second portion of the first surface such that the oxide layer is in contact with a periphery of the Schottky barrier contact and with a periphery of the ohmic contact; and a guard ring, the guard ring formed in the epitaxial layer around a periphery of the mesa to form a Zener diode such that the Schottky barrier contact is in contact with the Zener diode; wherein the Schottky barrier diode is 0.3 to 1 mm in thickness.