CREAM SOLDER FOR PREVENTING CHANGE WITH LAPSE OF TIME AND METHOD FOR PACKAGING PARTS BY USING THE SAME

PURPOSE:To prevent drying and oxidizing of the cream solder for preventing a change with lapse of time formed by enveloping cream solder with a capsule container and to lessen the generation of defective articles by printing the land surfaces of a printed circuit board with this cream solder. CONSTI...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SAKAGAMI TOSHIAKI, MAENISHI YASUHIRO, KURIBAYASHI TAKESHI, HAYATA KAZUE
Format:	Patent
Sprache:	eng
Schlagworte:	CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY MACHINE TOOLS MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PRINTED CIRCUITS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PURPOSE:To prevent drying and oxidizing of the cream solder for preventing a change with lapse of time formed by enveloping cream solder with a capsule container and to lessen the generation of defective articles by printing the land surfaces of a printed circuit board with this cream solder. CONSTITUTION:The cream solder 10 for preventing a change with lapse of time is constituted by covering the outer periphery of the cream solder 8 with the capsule-shaped container 9. The printed circuit board is printed with the solder 10 and the parts are mounted on the circuit board. The container 9 of the solder 10 is destroyed by the pressure at the time of mounting the parts or the container is destroyed by the temp. of a reflow machine, by which the cream solder 8, the parts and the printed circuit board are joined. The cream solder 8 is held covered with the container 9 when the printed circuit board is printed with the solder 10 and, therefore, the cream solder 8 is not directly exposed to the outdoor air and the drying and oxidizing thereof do not arise. A mounting deviation, etc., is, therefore, eliminated and the defective articles are decreased.