Solder reserve transfer device and process
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United States of America Patent
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Aug 24, 2004
Grant Date -
N/A
app pub date -
Dec 6, 2002
filing date -
Dec 6, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A solder transfer method which uses an electrically-conductive, e.g., metal, surface, of a stamping or pin or pad as a vehicle to transfer molten solder from a remote solder reserve to a solder joint to be made. In a preferred embodiment, a solder deposit previously-formed on a surface mount pad during a first reflow step will transfer up to the adjoining contact surfaces by a wicking process to provide the additional solder needed to fabricate a robust solderjoint. When one of the contact surfaces is a contact or pin on a first PCB, and the other contact surface is a SMT pad on a second PCB serving, for example, as a memory card, the process of the invention makes for an easy SMT processed attachment of the memory card to the first PCB without the need to add solder during a second reflow step to make a robust solder joint between the contact surfaces.
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