MODIFICATION OF SOLDER ALLOY COMPOSITIONS TO SUPPRESS INTERFACIAL VOID FORMATION IN SOLDER JOINTS
    114.
    发明申请
    MODIFICATION OF SOLDER ALLOY COMPOSITIONS TO SUPPRESS INTERFACIAL VOID FORMATION IN SOLDER JOINTS 审中-公开
    焊接合金组合物的改性以抑制焊接接头中的界面失控

    公开(公告)号:US20120205425A1

    公开(公告)日:2012-08-16

    申请号:US13447906

    申请日:2012-04-16

    CPC classification number: B23K35/262 H05K3/3463 Y10T403/479 Y10T428/12708

    Abstract: A solder joint comprising a solder capture pad on a substrate having a circuit; and a lead containing or a lead free solder selected from the group comprising Sn—Ag—Cu solder, Sn—Cu solder and Sn—Ag solder adhered to the solder capture pad; the solder selected from the group comprising between 0.1 and 6.0 percent by weight Zn. A solder joint, comprising a solder capture pad on a substrate having a circuit; and a Sn—Cu lead free solder adhered to the solder capture pad, the solder comprising between 0.1 and 6.0% by weight Zn. Formation of voids at an interface between the solder and the solder capture pad is suppressed. A method for forming solder joints using the solders.

    Abstract translation: 一种焊接接头,包括在具有电路的基板上的焊料捕获垫; 以及从包含Sn-Ag-Cu焊料,Sn-Cu焊料和Sn-Ag焊料的组中选择的含铅或无铅焊料,其粘附到焊料捕获垫上; 选自包含0.1至6.0重量%Zn的组的焊料。 一种焊接接头,包括在具有电路的基板上的焊料捕获垫; 并且Sn-Cu无铅焊料粘附到焊料捕获垫,焊料包含0.1至6.0重量%的Zn。 阻止在焊料和焊料捕获垫之间的界面处形成空隙。 一种使用焊料形成焊点的方法。

    Sprocket Opening Alignment Process and Apparatus for Multilayer Solder Decal
    120.
    发明申请
    Sprocket Opening Alignment Process and Apparatus for Multilayer Solder Decal 失效
    用于多层焊料贴花的链轮开口对准工艺和装置

    公开(公告)号:US20110097892A1

    公开(公告)日:2011-04-28

    申请号:US12983292

    申请日:2011-01-01

    Abstract: A process for aligning at least two layers in an abutting relationship with each other comprises forming a plurality of sprocket openings in each of the layers for receiving a sprocket of diminishing diameters as the sprocket extends outwardly from a base, with the center axes of the sprocket openings in each layer being substantially alignable with one another, the diameter of the sprocket openings in an abutting layer for first receiving the sprocket being greater than the diameter of the sprocket openings in an abutted layer. This is followed by forming a plurality of reservoir openings in each of at least two of the layers and positioning the sprocket openings in the layers to correspond with one another and the reservoir openings in the layers to correspond with one another so that substantial alignment of the center axes of the corresponding sprocket openings in the layers effects substantial alignment of the center axes of the corresponding reservoir openings in the layers. Engaging the sprocket openings with the sprocket by inserting the end of the sprocket having the smallest diameter into the sprocket openings having the largest diameter in the layers and continuing through to the sprocket opening having the smallest diameter in the layers effects substantial alignment of the center axes of the corresponding sprocket openings and substantial alignment of the center axes of the corresponding reservoir openings in the layers. The invention also comprises apparatus for performing this process.

    Abstract translation: 用于将至少两个彼此邻接的层对准的方法包括在每个层中形成多个链轮开口,用于当链轮从基座向外延伸时接收链轮直径减小的链轮,链轮的中心轴线 每个层中的开口基本上彼此对准,用于首先接收链轮的邻接层中的链轮开口的直径大于邻接层中链轮开口的直径。 随后在至少两个层中的每一个中形成多个储存器开口,并且将链轮开口定位在层中以彼此对应并且层中的储存器开口彼此对应,使得 层中对应的链轮开口的中心轴线对层中对应的储存器开口的中心轴进行实质上的对准。 通过将具有最小直径的链轮的端部插入到具有最大直径的链轮的链轮开口中并且连续到具有最小直径的链轮开口,使链轮开口与链轮接合,使得中心轴线 的对应的链轮开口和相应的储存器开口的中心轴线在层中的基本对准。 本发明还包括用于执行该过程的装置。

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