Patent ID: 7771220
Filing Date: 2010-08-10
Classification: G01R

Abstract:
1. An electrical connecting apparatus electrically connecting a conductive portion formed on one surface of a board to an electrode portion of a device under test, comprising: an electrical insulating plate; an elastic plate made of an electrical insulating material arranged on said electrical insulating plate; a sheet-like conductive plate arranged on said elastic plate; and a plurality of contacts each having a probe rear portion extending in a right-left direction within said electrical insulating plate, a deformation portion continuing into the tip end side of said probe rear portion and having an external surface extended upward, and a probe tip portion continuing into the tip end side of said deformation portion and penetrating said elastic plate and said conductive plate to extend upward, wherein said plurality of contacts comprise first and second contacts, and wherein said conductive plate comprises a hole area having at least one first hole portion allowing said probe tip portion of said first contact to abut to the conductive plate and a plurality of second hole portions not allowing said probe tip portions of said second contacts to abut thereon regardless of whether or not overdriving acts on said contacts.