A heuristic force-height equation for molten axisymmetric solder joints

A heuristic force-height equation for molten axisymmetric solder joints

A heuristic equation is developed which relates the height of a molten joint to its surface tension, geometric constraints, and the applied force. In its present state, the equation is valid only for heights varying up to 10% from the zero-load shape, although a method is suggested to extend this ra...

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1. Verfasser: Goldman, L.S.
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Sprache:eng
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Electronics industry
Equations
Fatigue
Flip chip
Force measurement
Laboratories
Shape measurement
Soldering
Surface tension
Surface-mount technology
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description A heuristic equation is developed which relates the height of a molten joint to its surface tension, geometric constraints, and the applied force. In its present state, the equation is valid only for heights varying up to 10% from the zero-load shape, although a method is suggested to extend this range. The equation agrees well with published data derived from an exact solution, and with the data from a small laboratory experiment. The equation is intended as a practical tool for packaging engineers and designers who do not have access to the software needed to obtain the exact solution.< >
doi_str_mv 10.1109/ECTC.1993.346694
format Conference Proceeding
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ispartof Proceedings of IEEE 43rd Electronic Components and Technology Conference (ECTC '93), 1993, p.1120-1124
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Electronics industry
Equations
Fatigue
Flip chip
Force measurement
Laboratories
Shape measurement
Soldering
Surface tension
Surface-mount technology
title A heuristic force-height equation for molten axisymmetric solder joints
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