npth

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  • PTH和NPTH有何区别

    PTH是沉铜孔(Plating Through Hole),孔壁有铜,一般是过电孔(VIA)及元件孔。NPTH是非沉铜孔(Non Plating Through Hole),孔壁无铜,一般是定位孔及锣丝孔。可用干膜封孔或在电镀前胶粒塞或电镀后二次钻孔或啤出