Metal working – Method of mechanical manufacture – Electrical device making
Patent
1994-01-07
1995-12-12
Arbes, Carl J.
Metal working
Method of mechanical manufacture
Electrical device making
437205, 437207, H05K 330
Patent
active
054738148
ABSTRACT:
A process for handling and storing surface-mount, encapsulated flip-chip carrier modules to prevent the formation of amoeba-like solder bridges between the flip-chip C4 connections along the boundary between the encapsulant and the chip surface and/or between the encapsulant and the chip carrier substrate surface. The concentration of free moisture in the encapsulant is maintained below a predetermined safe limit during reflow heating used to mount the modules on a circuit board.
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Arbes Carl J.
Belk Michael E.
International Business Machines - Corporation
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