Patent ID: 7829970

Claim:
A junction barrier Schottky diode in an integrated circuit, the diode comprising: an N-type well having a surface and a maximum first impurity concentration at the surface in a P-type substrate; a P-type anode region in the surface of the well and having a bottom surface, and having a second impurity concentration; an N-type cathode region in the surface of the well adjacent the anode region and having a bottom surface, and having a third impurity concentration; a first N-type region vertically abutting the bottom surfaces of the anode and cathode regions, and having a fourth impurity concentration at the bottom surface of the anode region; a buried N-type region in the N-type well and having a fifth impurity concentration; an ohmic contact to the anode region, a Schottky contact to the cathode region and an ohmic contact to the buried region from the surface; and the fourth impurity concentration at the bottom surface of the anode region being less than the maximum first, second, third and fifth impurity concentrations.