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    • 5. 发明授权
    • Implementing enhanced connector guide block structures for robust SMT assembly
    • 实现强大的SMT组装的增强连接器导块结构
    • US07985095B2
    • 2011-07-26
    • US12499913
    • 2009-07-09
    • William L. BrodskyJohn L. ColbertMark K. Hoffmeyer
    • William L. BrodskyJohn L. ColbertMark K. Hoffmeyer
    • H01R13/58
    • H05K3/305H01R12/7041H01R12/7047H05K3/301H05K2201/09781H05K2201/10189H05K2201/10409H05K2201/2027H05K2203/167Y02P70/613Y10S439/947
    • A method and enhanced connector guide block structures implement robust connector assembly including robust Surface Mount Technology (SMT) connector assembly. A connector guide block includes a printed wiring board (PWB) mating face including at least one mounting screw hole provided within a mounting portion for receiving a mounting screw. The connector guide block is assembled with a printed wiring board (PWB) by inserting a respective non-bonding screw through an aligned opening in the PWB into guide block mounting hole and a gap is defined from an upper surface of the PWB below the guide block mounting portion. The gap is filled with an electrically nonconductive underfill material and cured. Another connector guide block structure includes an upper connector guide block portion and a lower connector guide block portion with a gap between the guide block portions filled with a selected electrically nonconductive underfill material and cured.
    • 一种方法和增强的连接器引导块结构实现坚固的连接器组件,其包括坚固的表面贴装技术(SMT)连接器组件。 连接器引导块包括印刷线路板(PWB)配合面,其包括设置在用于接收安装螺钉的安装部分内的至少一个安装螺钉孔。 连接器引导块通过将相应的非接合螺钉穿过PWB中的对准的开口插入到引导块安装孔中而与印刷线路板(PWB)组装,并且在引导块下面的PWB的上表面限定间隙 安装部分。 间隙填充有非导电底层填充材料并固化。 另一个连接器引导块结构包括上连接器引导块部分和下连接器引导块部分,在引导块部分之间填充有选定的非导电底部填充材料并固化的间隙。
    • 7. 发明授权
    • Universal surface finish for DCA, SMT and pad on pad interconnections
    • DCA,SMT和焊盘互连焊盘的通用表面光洁度
    • US5910644A
    • 1999-06-08
    • US873060
    • 1997-06-11
    • Dale E. GoodmanMark K. HoffmeyerRoger S. Krabbenhoft
    • Dale E. GoodmanMark K. HoffmeyerRoger S. Krabbenhoft
    • H05K3/24H05K1/16
    • H05K3/244H01L2224/45147H01L2224/49171H01L2924/19105
    • A printed circuit connector terminal pad coating technique is disclosed which functions as a single universal pad surface which supports multiple electrical connection practices including wirebonding, soldering, and wear resistant, pad on pad mechanical connection. The tri-plate surface treatment includes an initial diffusion resistant coating of nickel; an intermediate layer of hard, wear resistant noble or semi-noble metal that provides pad on pad connector reliability and affords a metallurgically stable solder joints and wirebond interfaces; and a final coating of soft gold. The intermediate layer may be pure palladium having a nominal thickness of 35 microinches or a layer of gold, hardened by cobalt, nickel, iron or a combination of these dopants to effect a hardness of 200 to 250 (Knoop scale). The use of a common surface treatment for the multiple attachment processes is implemented with a single masking step, rather than a sequence of selective masking, plating and stripping operations. In the printed circuit environment, the masking is provided by the final covering that encloses, seals, and electrically insulates the conductors in a circuit board application or in the instance of a flexcable, the adhesive coated flexible coverlay the covers and seals the copper conductor elements while exposing the conductor terminal pads.
    • 公开了一种印刷电路连接器端子焊盘涂覆技术,其作为单个通用焊盘表面,其支持多种电连接实践,包括引线键合,焊接和耐磨,焊盘机械连接。 三板表面处理包括镍的初始扩散涂层; 硬质耐磨贵金属或半贵金属的中间层,提供衬垫连接器可靠性的焊盘,并提供冶金稳定的焊点和引线接口; 和最后的软金涂层。 中间层可以是公称厚度为35微英寸的纯钯或由钴,镍,铁或这些掺杂剂的组合硬化的金层,以实现200至250(Knoop量程)的硬度。 通过单个掩蔽步骤而不是选择性掩蔽,电镀和剥离操作的顺序来实现对多个附接过程的常见表面处理的使用。 在印刷电路环境中,掩模由最终的覆盖物提供,封装,密封和电绝缘在电路板应用中,或者在柔性的情况下,粘合剂涂覆的柔性覆盖物覆盖并密封铜导体元件 同时暴露导体端子焊盘。