Method of performing plating of an item having fine parts and a

Details Method of performing plating of an item having fine parts and a Method of performing plating of an item having fine parts and a

1986-03-27

1987-09-22

Smith, John D.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427 98, 427310, 427311, 427312, 427433, 174 52FP, B05D 512

Patent

active

046954813

ABSTRACT:
A method and device of performing plating of an item having a row of fine parts, e.g. a flatpack IC are disclosed. The method comprises immersing said item in a bath of molten solder, removing said item from said bath while maintaining said item in an attitude such that said row of fine parts is sloped with respect to the surface of said molten solder, and causing flux to exert a fluxing action on said molten solder which adheres to said fine parts, thereby decreasing the surface tension of the solder adhering to said fine parts and preventing bridges of solder from forming between said fine parts.

REFERENCES:
patent: 2875091 (1959-02-01), Wolfe
patent: 3359132 (1967-12-01), Wittmann
patent: 4463217 (1984-07-01), Orcult
patent: 4469716 (1984-09-01), Caratsch
patent: 4506238 (1985-03-01), Endoh
patent: 4570569 (1986-02-01), Kondo
W. R. Lewis, "Polyethylene Glycol as a Vehicle for Acid Fluxes", Quarterly Journal of the Tin Research Institute, Summer, 1959.

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