ESD protective apparatus for a semiconductor circuit having an ESD protective circuit which makes contact with a substrate or guard ring contact

摘要

An electrostatic discharge (ESD) protective apparatus for a semiconductor circuit has at least one ESD protective element, which is connected between the substrate contact and a ground potential connection, and is electrically connected to the substrate contact. The ESD protective element may be in the form of an ESD protective diode or an ESD protective transistor. It is also possible to connect a resistor or an ESD protective transistor between the substrate contact and the ground potential connection as an ESD protective element, and additionally to connect an ESD protective diode or an ESD protective transistor between the substrate contact and a supply voltage potential connection.