IPC-A-600H-2010 中文版 印制板的可接受性 (1).pdf - 第119页

T arget Condition - Class 1,2,3 (⽬标条件 - 1,2,3级) Acceptable - Class 3 (可接受条件 - 3级) • Wrap plating is continuous from the filled plated hole onto the external surface and extends by a minimum of 25 µm [984 µin] where an an…

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Copper wrap plating minimum as specified in the IPC-6010 series shall be continuous from the filled plated hole onto the external surface of
any plated structure and extend by a minimum of 25 µm [984 µin] where an annular ring is required as shown in Figure 339a.
Reduction of surface wrap copper plating by processing (sanding, etching, planarization, etc.) resulting in insufficient wrap plating is not
allowed as shown in Figure 339b.
IPC-6010系列文件中规定的最小铜包电镀应当任何电镀结构表面是连续的,在要求有环宽时,至少
25µm[984µin],如图339a所示。
允许出现如图339b所示的由于加工(研磨等)导致包铜电镀不足造的表面铜镀层
Note: Cap plating, if required, over filled holes is not considered in wrap copper thickness measurements.
注: 如要求盖覆电镀,测量时,不上方作为测量
339a 表⾯覆铜量(⽤于所有填塞的PTH
339b 研磨/整平去除覆铜(不可接受)
注:尺寸线和箭头标示出了除之处。
3.3 PLATED-THROUGH HOLES – GENERAL(镀覆孔 则)
3.3.9 Copper Wrap Plating(铜覆电镀)
Visual observations made on cross-sections only.对显微切片进行目检观察。
110 IPC-A-600H-201020104
Target Condition - Class 1,2,3(⽬标条件 - 1,2,3级)
Acceptable - Class 3(可接受条件 - 3级)
Wrap plating is continuous from the filled plated hole onto the
external surface and extends by a minimum of 25 µm [984 µin]
where an annular ring is required.
Wrap thickness is not less than 12 µm [472 µin] for through, blind
and buried vias two layers..
Wrap thickness is not less than 6 µm [236 µin] for blind and bur-
ied microvias.
Wrap thickness is not less than 7 µm [276 µin] for buried via
cores (two layers).
Reduction of surface wrap copper plating by processing (sanding,
etching, planarization, etc.) does not result in insufficient wrap
plating.
铜电镀到外表面是连续的,要求有
环宽时,至少25µm[984µin]
对于大于等于两的通铜镀
12µm[472µin]
对于 孔包铜镀层6µm[236
µin]
对于 孔导 材(两铜镀层7µm
[276µin]
由于加工(研磨等)导致的表面铜镀层
没有造成包铜镀层不足。
339c
3.3 PLATED-THROUGH HOLES – GENERAL(镀覆孔 则)
3.3.9 Copper Wrap Plating (cont.)覆铜电镀(续)
Visual observations made on cross-sections only.对显微切片进行目检观察。
111IPC-A-600H-2010 20104
Acceptable - Class 1,2(可接受条件 - 1,2级)
Wrap plating is continuous from the filled plated hole onto the
external surface.
Wrap thickness is not less than 5 µm [197 µin] for all through-
hole and via structures.
Reduction of surface wrap copper plating by processing (sanding,
etching, planarization, etc.) does not result in insufficient wrap
plating.
电镀到外表面是连续的。
于所有通 孔结构铜镀层5µm
[197µin]
由于加工(研磨等)导致的表面铜镀层
没有造成包铜镀层不足。
Nonconforming - Class 1,2,3(不符合条件 - 1,2,3级)
Defects either do not meet or exceed above criteria.
缺陷不符合或出上述要求。
Note: Cap plating, if required, over filled holes is not considered in wrap copper thickness measurements.
注: 如要求盖覆电镀,测量时,不上方作为测量
339d
339e
339f
3.3 PLATED-THROUGH HOLES – GENERAL(镀覆孔 则)
3.3.9 Copper Wrap Plating (cont.)覆铜电镀(续)
Visual observations made on cross-sections only.对显微切片进行目检观察。
112 IPC-A-600H-201020104