Patent ID: 6158649
Filing Date: 2000-12-12
Classification: B23K,H01L,H05K

Abstract:
A solder ball mounting apparatus comprising:a solder ball vessel loaded with a plurality of preformed solder balls;a first ionized air blower for blowing gas containing ions to the solder balls in the solder ball vessel;a suction tool having a plurality of holes formed therein in order to apply vacuum suction to the solder balls cleared of electricity by the first ionized air blower;a second ionized air blower for blowing gas containing ions to a surface of the suction tool having the holes formed therethrough, before attracting the solder balls by using vacuum suction;a mounting head for letting the suction tool attached thereto enter the solder ball vessel, attracting the solder balls by vacuum suction, then moving while holding the solder balls, positioning the suction tool over the substrate having pads onto which the solder balls are to be transferredan electrostriction device for lowering the suction tool attracting and holding the solder balls, stopping the solder balls near the pads, and causing application of a voltage for transferring and pressing the solder balls onto the respective pads on the substrate.