Patent ID: 6065667
Filing Date: 2000-05-23
Classification: B23K,H01L,H01R

Abstract:
A capillary for use in a wire bonding apparatus, the capillary comprising:a capillary body including a capillary tip and a wire feed bore sized suitably for receiving a bonding wire there through;a ball bond molding cavity formed in the capillary tip, the cavity including cavity walls and a recessed tip surface, wherein the portion of the capillary tip outside of the cavity defines a wedge bonding surface and the cavity is sized and shaped to mold balls formed during ball bonding into a shape that is substantially similar to the shape of the cavity;a chamfer at a distal portion of the wire feed bore that opens into the ball bond molding cavity, wherein the chamfer area provides a relief area suitable for receiving excess ball material during ball bonding.