Composition of solid-containing paste
AssigneeMicronic Mydata AB
InventorTorbjorn Sandstrom
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AssigneeMicronic Mydata AB
InventorTorbjorn Sandstrom
Estimating the term…
Solder paste compositions and methods for applying solder paste. The solder paste includes lubricating additives to the flux to decrease friction and the changes of metal to metal contact between the surfaces of the solder balls and other surfaces that the solder balls come into contact with. The solder paste also includes solder balls of different average sizes, that improves the desirable liquid like properties of the granular paste while further reducing viscosity. As such, the solder paste is used in current screen printing solder paste application methods without the risk of clogging or agglomeration of solder paste particles on surfaces. The solder paste is also used in jetting or dispensing solder paste application methods without the risk of clogging or agglomeration within the cylinders/containers or apertures and nozzles that are used within such methods.
A clog-free solder paste, the clog-free solder paste having a first fraction f of smaller solder balls by weight with an average diameter S and a second fraction F of larger solder balls by weight with an average diameter S, the first fraction f and second fraction F taken by weight, where 3.5 s<S and F<3f, such that:
A method of depositing solder paste onto a surface comprising:
Dependencies are inferred from the claim text.