POSITIVE STRIKE SCR, NEGATIVE STRIKE SCR, AND A BIDIRECTIONAL ESD STRUCTURE THAT UTILIZES THE POSITIVE STRIKE SCR AND THE NEGATIVE STRIKE SCR

摘要

A first silicon controlled rectifier has a breakdown voltage in a first direction and a breakdown voltage in a second direction. A second silicon controlled rectifier has a breakdown voltage with a higher magnitude than the first silicon controlled rectifier in the first direction, and a breakdown voltage with a lower magnitude than the first silicon controlled rectifier in the second direction. A bidirectional electrostatic discharge (ESD) structure utilizes both the first silicon controlled rectifier and the second silicon controlled rectifier to provide bidirectional protection.