Precision Connector Designs, Inc.

John D Swaffield

Kurt C Hetzel

An IC test/burn-in socket with spring cantilever beam contacts and a lid 4 that provides for self-aligning of the IC lead and the socket contacts 6. The lid is actuated from above, and the lid has three positions--one for an unloaded socket, one for holding the contacts apart for insertion of an IC, and the other for releasing the contacts such the the spring force of the cantilever beam contacts make electrical contact with the IC leads. The cantilever contacts are arranged in interdigitated rows. The flat cantilever contacts allow the contacts to spread a substantial distance to achieve the desired contact force and will thus accommodate a wider range of IC lead thicknesses and, so, be more forgiving than earlier designs. There is a lid with troughs to guide the contacts and a through hole whereby an IC is inserted. The troughs and through hole provide improved registration of IC lead to socket contacts. The lid is accessed from above to enhance automatic operation and to reduce the footprint or space taken by the socket on a PCB.

Zero insertion force test/burn-in socket

A bus bar assembly including an elongated insulative base member and a plurality of modular insulative unit pieces attached to the base member and having contact receiving openings, conductive bus bars in an enclosed region defined by the base member and unit pieces, contact pins of the bus bar extending upward into insulative tubular members extending downward from and centered within the openings, insulative fins supporting the bus bars above a bottom wall of the base member, an insulative divider wall between adjacent bus bars extending upward from the bottom wall, mounting holes in the upper and lower walls, and an insulative shield between the region between mounting holes and the bus bars.

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Danvers, MA, United States of America

John D Swaffield