Electrical connecting device and method for making same

Electricity: conductors and insulators – Conduits – cables or conductors – Preformed panel circuit arrangement

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174257, 361760, 361778, H05K 118

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active

056103719

ABSTRACT:
An electrical connecting device including a first circuit board providing thereon with input/output terminals, each of the terminals having a tip surface coated with gallium and a second circuit board providing thereon with contact terminals, each of the terminals having a tip surface coated with indium or tin. A low-melting point alloy layer is formed by a mutual action between gallium and indium or tin, when the input/output terminals of the first circuit board are in contact with the respective terminals of the second circuit board and the terminals are electrically connected to each other. The second metal layer includes a plurality of wire-like metal supports extending substantially perpendicular to the surface of the terminal and a low-melting point metal retained by the wire-like metal supports.

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IBM Technical Disclosure Bulletin, Paste-Encapsulated Terminal, J. R. Petrozello, vol. 21, No. 11, Apr. 1979, pp. 4444-4445.

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