IPC-A-600H-2010 中文版 印制板的可接受性 (1).pdf - 第120页

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. • Reduc…

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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
Target Condition - Class 1,2,3(⽬标条件 - 1,2,3级)
Hole is free of voids.
空洞。
Acceptable - Class 2,3(可接受条件 - 2,3级)
No more than one plating void per test coupon or production
printed board, regardless of length or size.
No plating void in excess of 5% of the total printed board thick-
ness.
No plating voids evident at the interface of an internal conductive
layer and plated hole wall.
Plating voids less than or equal to 90° of the circumference.
附连测试板或品印制板上的镀层空洞不1个
论长度或大
镀层空洞不过印制板5%
在内层导电层镀层镀层空洞。
镀层空洞于或等于90°
Acceptable - Class 1(可接受条件 - 1级)
No more than three plating void per test coupon or production
printed board, regardless of length or size.
No plating void in excess of 5% of the total printed board thick-
ness.
No plating voids evident at the interface of an internal conductive
layer and plated hole wall.
Plating voids less than or equal to 90° of the circumference.
附连测试板或品印制板上的镀层空洞不3
论长度或大
镀层空洞未超过印制板5%
在内层导电层镀层镀层空洞。
镀层空洞于或等于90°
3310a
3310b
3.3 PLATED-THROUGH HOLES – GENERAL(镀覆孔 则)
3.3.10 Plating Voids(镀层空洞)
113IPC-A-600H-2010 20104
Visual observations made on cross-sections only.对显微切片进行目检观察。