Patent ID: 6520026
Filing Date: 2003-02-18
Classification: B23K,G01N,H01L

Abstract:
A method for testing an assembly process for making direct attachment of wires to contact/terminal leads, the method comprising the following steps:(a) aligning a wire and a contact/terminal lead between a pair of opposed electrodes such that the boundary of a portion of the wire is contained within the boundary of a portion of the contact/terminal lead, one electrode being centered on the wire portion such that there is undisturbed wire extending from both sides of said electrode; (b) applying force through the electrodes to the wire and the contact/terminal lead such that the wire is deformed; (c) passing electrical current through the electrodes, wire and contact/terminal lead to make a thermocompression bond of the wire to the contact/terminal lead; (d) repeating steps a-c thereby producing at least one set of attached wires and contact/terminal leads; (e) performing a peel test on a subgroup of each set produced in step (d); thereby determining if the thermocompression bonds of the attached wires and contact/terminal leads produced in step (d) are acceptable.