METODO DE PRODUZIR CIRCUITOS IMPRESSOS

A method of producing a printed circuit comprising printing a planting resist onto the clean surface of a layer of electrically conductive material on at least one side of a substrate so as to leave exposed only the required track areas of the surface; electroplating over the track areas a metal all...

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Bibliographic Details
Main Author JAMES BRIAN O' HARA
Format Patent
LanguagePortuguese
Published 07.08.1984
Edition3
Subjects
CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
PRINTED CIRCUITS
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Summary:A method of producing a printed circuit comprising printing a planting resist onto the clean surface of a layer of electrically conductive material on at least one side of a substrate so as to leave exposed only the required track areas of the surface; electroplating over the track areas a metal alloy, preferably a palladium/nickel alloy, which will act as an etch resist for the underlying electrically conductive material, which has good solderability, which has a melting point higher than 250 °C, and which will provide a base for gold plate, removing the plating resist; and removing the layer of electrically conductive material from the non-track areas by etching.
Bibliography:Application Number: BR19828207672