Electrostatic discharge protection apparatus

Details Electrostatic discharge protection apparatus Electrostatic discharge protection apparatus

1998-06-29

1999-12-14

Jackson, Stephen

Electricity: electrical systems and devices

Safety and protection of systems and devices

Transient responsive

361 56, 361118, 361129, H02H 300

Patent

active

060025697

ABSTRACT:
Apparatus for protecting at least one internal component of a printed circuit board provided inside a housing from an electrostatic discharge which is generated from outside the housing and enters through an external component to which the at least one internal component is connected, includes a base imbedded between a resist layer and a substrate of the printed circuit board to electrically ground the electrostatic discharge. A node is provided between the external component and the at least one internal component to be protected, for shunting the electrostatic discharge away from the internal component and to the base. Also included is a mask provided in a space between the base and the node for maintaining an electrical disconnection between the base and the node in the absence of the electrical discharge, and for allowing the electrical discharge to be shunted away from the at least one internal component to be protected to ground, via the node and the base, in the presence of the electrical discharge.

REFERENCES:
patent: 3748521 (1973-07-01), Wright et al.
patent: 4532419 (1985-07-01), Takeda

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