Patent ID: 6586955
Filing Date: 2003-07-01
Classification: G01R

Abstract:
A probe card for testing electronic elements, said probe card comprising a substrate, a layer of dielectric material having a plurality of cavities therein supported on said substrate, a mass of fusible conductive material having a melting temperature below about 150Â° C. disposed in each of said cavities, said dielectric material electrically insulating the masses of fusible conductive material from one another, and a probe tip of conductive material having a melting temperature greater than about 150Â° C. at one common end of each of the masses of fusible conductive material, said layer of dielectric material having a plurality of channels formed therein, whereby each of said mass of fusible conductive material is surrounded by said dielectric material forming a probe contact, each said probe contact being separated from an adjacent probe contact by at least one of said channels.