GOLD PLATING LIQUID, AND METHOD OF PRODUCING ELECTRONIC COMPONENT

PROBLEM TO BE SOLVED: To realize a gold plating liquid which can evade erosion to the object to be plated as possible, and can form a uniform gold film having satisfactory denseness and excellent solder wettability. SOLUTION: The gold plating liquid comprises: (1) a non-cyanogen gold source; (2) sul...

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Hauptverfasser:	TAKANO YOSHIHIKO, KUNISHI TATSUO
Format:	Patent
Sprache:	eng
Schlagworte:	CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DIFFUSION TREATMENT OF METALLIC MATERIAL ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PRINTED CIRCUITS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To realize a gold plating liquid which can evade erosion to the object to be plated as possible, and can form a uniform gold film having satisfactory denseness and excellent solder wettability. SOLUTION: The gold plating liquid comprises: (1) a non-cyanogen gold source; (2) sulfite as a complexing agent for gold; (3) aminocarboxylic acids as a stabilizer for gold; (4) oxycarboxylic acids as a masking agent; (5) an antimony compound and/or a bismuth compound as a precipitation promotor; (6) at least one or more kinds of specified organic compounds selected from polyacrylate type organic compounds, quaternary ammonium salt type organic compounds, polyethyleneglycol and polypropylene glycol as a precipitation conditioner. COPYRIGHT: (C)2004,JPO&NCIPI