Patent ID: 7145323

Claim:
A test substrate for receiving an electrical component for testing by an electrical probe having a first portion and a second portion isolated from each other located on a tip, the electrical component having a plurality of leads extending therefrom, the test substrate comprising: an insulative base layer; a conductive layer formed on at least a portion of a surface of the insulative base layer; at least one isolated pad formed in the conductive layer and located in the conductive layer at a location corresponding to a position of one lead of the plurality of leads extending from the electrical component when the electrical component is disposed on the test substrate, the at least one isolated pad configured so as to contact the one lead and to electrically isolate the one lead when the electrical component is disposed on the test substrate; at least one first isolated conductive trace formed in the conductive layer located and configured to provide an electrical signal to another lead of the plurality of leads extending from the electrical component when the electrical component is disposed on the test substrate by the first portion of the electrical probe contacting a portion of the at least one first isolated conductive trace; at least a portion of the conductive layer configured so as to contact at least one other lead of the plurality of leads extending from the electrical component when the electrical component is disposed on the test substrate; and at least one second isolated conductive trace formed in the conductive layer located and configured to provide an electrical signal to another lead of the plurality of leads extending from the electrical component when the electrical component is disposed on the test substrate for the second portion of the electrical probe contacting a portion of the at least one second isolated conductive trace when the first portion of the electrical probe contacts a portion of the at least one first isolated conductive trace.