Patent ID: 6966480

Claim:
In a portion of a wire bonding machine apparatus having a support for a semiconductor device and having a capillary used for bonding a wire to a portion of the semiconductor device and a portion of a lead frame comprising: a block for heating and for supporting a semiconductor device during a wire bonding operation; a wire bonding capillary tool having an outer diameter including: a capillary tip having a hole therethrough terminating at one end thereof; and a face on the one end of the capillary tip, the face including a first frusto-conical surface extending from a portion of a hole of the capillary tip, a second frusto-conical surface having a portion thereof connected to the first frusto-conical surface, a substantially horizontal annular surface having a portion thereof connected to the second frusto-conical surface, the substantially horizontal annular surface defined by a radius of curvature of the capillary tip, the substantially horizontal annular surface formed by a radius having a concave surface with a degree of curvature, the concave surface extending from a portion of the substantially horizontal annular surface, the degree of curvature of the concave surface defined by a radius of curvature and the degree of curvature of the concave surface providing clearance of the capillary tip from portions of the semiconductor device, and an annular curved surface intersecting the concave surface extending from the substantially horizontal annular surface, and an annular conical surface extending from an outer diameter of the face of the capillary tip.