Method and apparatus for applying solder to an element on a substrate
    26.
    发明授权
    Method and apparatus for applying solder to an element on a substrate 失效
    将焊料施加到基板上的元件的方法和装置

    公开(公告)号:US06425518B1

    公开(公告)日:2002-07-30

    申请号:US09912845

    申请日:2001-07-25

    Abstract: There is provided a method for applying solder to an element on a surface of a substrate. The method comprises the steps of (a) placing a mold over the surface, where the mold includes a conduit that contains the solder, and (b) heating the solder to a molten state so that the solder flows from the conduit onto the element. The conduit enjoys two degrees of horizontal freedom with respect to the surface such that the conduit becomes substantially aligned with the element when the solder is in the molten state. There is also provided a system for applying solder to an element on a surface of a substrate.

    Abstract translation: 提供了将焊料施加到基板表面上的元件的方法。 该方法包括以下步骤:(a)将模具放置在表面上,其中模具包括含有焊料的导管,和(b)将焊料加热至熔融状态,使得焊料从导管流到元件上。 导管相对于表面具有两度的水平自由度,使得当焊料处于熔融状态时,导管变得基本上与元件对齐。 还提供了一种用于将焊料施加到衬底表面上的元件的系统。

    Plastic solder array using injection molded solder
    28.
    发明授权
    Plastic solder array using injection molded solder 失效
    塑料焊料阵列采用注塑焊料

    公开(公告)号:US6029882A

    公开(公告)日:2000-02-29

    申请号:US67904

    申请日:1998-04-27

    Abstract: Disclosed is a solder injection mold apparatus and method for providing solder balls to a printed circuit board substrate using the solder injection mold apparatus in the plastic ball grid array (PBGA). The solder mold through holes are chamfered at entry and at exit ends to assist in receipt of molten solder and the formation and transfer of solder balls to lands on the substrate. A blind recess is provided in the second major surface of the mold, i.e. the side facing the substrate, in order to accommodate electronic components mounted thereon. Solder balls are delivered and metallurgically affixed to the lands in a process that requires only one reflow, leaving the through holes clean of solder and the mold ready for reuse. The material of which the substrate, mold and base plate are comprised is selected to be non-wettable by solder and mutually compatible with respect to CTE when exposed to temperatures of molten solder.

    Abstract translation: 公开了一种使用塑料球栅阵列(PBGA)中的焊料注射模具装置向印刷电路板基板提供焊球的焊料注射模具装置和方法。 焊接模具通孔在入口处和出口端被倒角,以帮助接收熔融焊料,并且将焊球形成和转移到衬底上的焊盘上。 在模具的第二主表面,即面向衬底的一侧设置盲孔,以容纳安装在其上的电子部件。 焊球在仅需要一个回流的过程中输送和冶金地附着在焊盘上,留下通孔清洁焊料并且模具准备好重新使用。 选择基材,模具和基板的材料,当暴露于熔融焊料的温度时,被选择为不被焊料润湿并且相对于CTE相互兼容。

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