Invention Grant
- Patent Title: Conductive material for a connecting part
- Patent Title (中): 用于连接部件的导电材料
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Application No.: US12171568Application Date: 2008-07-11
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Publication No.: US07871710B2Publication Date: 2011-01-18
- Inventor: Yasushi Masago , Ryoichi Ozaki , Hiroshi Sakamoto , Yukio Sugishita
- Applicant: Yasushi Masago , Ryoichi Ozaki , Hiroshi Sakamoto , Yukio Sugishita
- Applicant Address: JP Kobe-shi
- Assignee: Kobe Steel, Ltd.
- Current Assignee: Kobe Steel, Ltd.
- Current Assignee Address: JP Kobe-shi
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2007-218903 20070824
- Main IPC: B32B15/01
- IPC: B32B15/01 ; B05D5/12 ; H01R13/03

Abstract:
Disclosed is a conductive material for a connecting part, including: a base material made up of a Cu strip; a Cu—Sn alloy covering layer having an average thickness of 0.2 to 3.0 μm; and an Sn covering layer, the Cu—Sn alloy covering layer being provided between the base material and the Sn covering layer, wherein in a cross section perpendicular to the surface of the conductive material, the diameter [D1] of the minimum inscribed circle of the Sn covering layer is 0.2 μm or less, the diameter [D2] of the maximum inscribed circle of the Sn covering layer is 1.2 to 20 μm, the difference in elevation [y] between the outermost point of the material and the outermost point of the Cu—Sn alloy covering layer is 0.2 μm or less, and a bright or semi-bright tin electroplating layer having an average thickness of 0.01 μm or more in an approximately uniform thickness is formed on the outermost layer as part of the Sn covering layer.
Public/Granted literature
- US20090053553A1 CONDUCTIVE MATERIAL FOR A CONNECTING PART Public/Granted day:2009-02-26
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