Method of forming discrete solder portions on respective contact pads of
a printed circuit board
    1.
    发明授权
    Method of forming discrete solder portions on respective contact pads of a printed circuit board 失效
    在印刷电路板的相应接触垫上形成分立焊料部分的方法

    公开(公告)号:US5842274A

    公开(公告)日:1998-12-01

    申请号:US523566

    申请日:1995-09-05

    IPC分类号: H05K3/12 H05K3/34

    摘要: The invention provides for a method of forming discrete solder portions (16) on respective contact pads (10) whereby a strip of solder paste (12) is formed over a plurality of said pads (10). The strip (12) is formed with portions of reduced width (14) which are located over the spaces (22) between adjacent pads (10). The paste is melted and the surface tension at the portions of reduced width (14) causes the movement of solder towards the pads (10) and the separation of the strip (12) into discrete solder portions (16).

    摘要翻译: 本发明提供了一种在相应的接触焊盘(10)上形成分立焊料部分(16)的方法,由此在多个所述焊盘(10)上形成焊膏条(12)。 条(12)形成有减小的宽度(14)的部分,其位于相邻垫(10)之间的空间(22)之上。 糊料熔化,并且在减小的宽度(14)的部分处的表面张力导致焊料朝向焊盘(10)的移动和条带(12)分离成离散的焊料部分(16)。