Process for the production of printed circuits with solder rejecting
sub-zones
    4.
    发明授权
    Process for the production of printed circuits with solder rejecting sub-zones 失效
    用于生产具有焊料拒收子区域的印刷电路的工艺

    公开(公告)号:US4268349A

    公开(公告)日:1981-05-19

    申请号:US723582

    申请日:1976-09-15

    摘要: A process for the production of printed circuit boards having first zones of a wiring pattern for receiving solder and second sub-zones provided with solder rejecting properties so that they do not receive solder, characterized by galvanically applying a solderable etch-resistant metal layer on the first sub-zones of each conductive metal layer, by photo printing a mask of etch-resistant material on the second sub-zones, etching to remove the exposed portions of the conductive metal layer, removing the mask from the second sub-zones and providing the exposed second sub-zones with a solder rejecting property with the aid of passivation without impairing the solderability of the etch-resistant metal layers of the first sub-zones.

    摘要翻译: 一种用于生产印刷电路板的方法,该印刷电路板具有用于接收焊料的布线图案的第一区域和具有阻焊性能的第二子区域,使得它们不接收焊料,其特征在于将可焊接耐腐蚀金属层电镀在 每个导电金属层的第一子区域,通过在第二子区域上印刷耐蚀刻材料的掩模,蚀刻以去除导电金属层的暴露部分,从第二子区域移除掩模并提供 暴露的第二子区域借助于钝化而具有阻焊性,而不损害第一子区域的耐蚀刻金属层的可焊性。