金、锡印刷电路板用弹性复合结构触点的接触电阻特性

T. Tamai, Y. Hattori
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引用次数: 1

摘要

由硅橡胶和分散的炭黑颗粒组成的导电弹性体的特性,它在一个简单的材料中表现出导电和弹性的特性。该材料已广泛应用于开关触点和液晶面板的连接器中。然而,由于接触面的表面状态非常柔软,因此很难去除被污染的对侧接触面的污染膜,并且由于薄膜破裂而难以获得低接触电阻。该研究旨在明确弹性体的结构,表明其去除污染膜和低接触电阻的特性。采用碳金属纤维、金属网、镀表面等不同分散材料组成的六种不同类型的弹性体触点作为试样。相反的触点是印刷电路板(PCB)上镀金和镀锡的接触面。在两种污染的PCB接触表面上,含有硬质材料的弹性体触点比仅在弹性体基体中分散碳颗粒的触点表现出更低的接触电阻。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Contact Resistance Characteristics of Elastomeric Complex Structure Contacts for Gold and Tin Printed Circuit Board
Characteristics of conductive elastomer which is composed of silicone rubber and dispersed carbon black particles shows conductive and elastic properties in one simple material. This material has been widely applied to contacts of switches and connectors of a liquid crystal panels. However, since surface state of the contact is very soft, it is difficult to remove contaminant films of contaminated opposite side contact surface and to obtain low contact resistance owing to break the film. This study has been conducted to clear structures of the elastomer which indicates removal characteristics for contaminant films and low contact resistance. As specimens, six different types of the elastomer contacts composed by different type of dispersed such materials as carbon and metal fibers, metal mesh, and plated surfaces were used. The opposite contacts were Au and Sn plated contact surface on a printed circuit board (PCB). The elastomeric contacts contained hard materials showed lower contact resistance than only dispersed carbon particles in the elastomer matrix for both contaminated PCB contact surfaces.
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