Electric heating – Metal heating – Wire – rod – or bar bonding
Patent
1991-03-14
1993-03-09
Shaw, Clifford C.
Electric heating
Metal heating
Wire, rod, or bar bonding
219 8515, 219 8518, 219113, B23K 100
Patent
active
051928434
ABSTRACT:
A method is provided to replace a damaged pin in a module for an integrated circuit assembly without damaging the circuit device or chip mounted in a circuitized substrate. This method comprises brazing a new pin to the base of the old pin by capacitive discharge brazing with a ribbon of compatible metal foil, requiring no flux, and is effected by firing the charge by completing a circuit which includes a pin attachment tool, the ribbon and the power supply, but in which circuit the chip is bypassed. The arc is struck and the new pin is brazed to the old without generating sufficient heat to damage the chip, and without conducting any current through the chip. The attachment tool is uniquely adapted to clamp the new pin and locate the pin precisely over the base of the old pin.
REFERENCES:
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patent: 4632294 (1986-12-01), Druschel et al.
Cargnel Robert A.
Morran James R.
Aluminum Company of America
Pearce-Smith David W.
Shaw Clifford C.
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