Patent ID: 7276922
Filing Date: 2007-10-02
Classification: G01R,G11C,H05K,Y10T

Abstract:
1. An apparatus for providing electrically conductive paths for test signals, said apparatus comprising: a substrate comprising a first surface and a second surface opposite said first surface; a plurality of electrically conductive terminals disposed on said first surface of said substrate; a plurality of electrically conductive signal paths within said substrate, ones of said signal paths being electrically connected to ones of said terminals; a plurality of electrically conductive probes attached to said second surface of said substrate, said probes disposed to contact respective individual ones of a plurality of electronic devices to be tested; and a thin film resistor electrically connecting one of said signal paths with one of said probes, said one of said signal paths also being electrically interconnected to other of said probes, said resistor thereby isolating said other of said probes from a fault in one of said electronic devices contacted by said one of said probes, wherein said one of said signal paths is part of a bus structure that electrically connects one of said terminals to ones of said probes, said bus structure providing a plurality of different conductive paths between said one of said terminals and at least one of said probes.