Method and apparatus for release and optional inspection for conductive preforms placement apparatus
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United States of America Patent
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-
Jul 2, 2002
Issued Date -
N/A
app pub date -
May 11, 1999
filing date -
Jan 28, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus are disclosed for releasing solder spheres during the locating and/or placing of a pattern of conductive preforms 32 on a respective pattern of electronic pads 14 on a receiving substrate 12 for such uses as a Ball Grid Array component 24. The release mechanisms are of either compliant mechanical 11, vibratory 90, air pressure 100 or 120, or sound pressure waves 140. Additionally, a method and apparatus is disclosed for the electrical inspection for presence or absence of the complete pattern of conductive preforms.
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