BLANKET IMPLANT DIODE

摘要

Blanket implant diode which can be used for transient voltage suppression having a P+ substrate implanted with an N-type dopant blanket implant near a top surface of the substrate, creating a P- region. An oxide mask is layered adjacent to and above the P- region. The oxide mask is partially etched away from a portion of the P- region, creating an etched region. An N-type main function implant is implanted into the etched region, creating an N+ region above the P+ substrate and adjacent the P- region. And, a metal is layered above the oxide mask in the etched region to form an electrode. Terminations may be attached electrically to both sides of the P-N junction. Methods of making and using the present invention and methods for transient voltage suppression are also provided.