IPC-A-600H-2010 中文版 印制板的可接受性 (1).pdf - 第95页

Metal planes are used for mechanical reinforcement and/or electromagnetic shielding for printed boards. Many requirements are the same as for metal-core printed boards. 金 属层 用作印制板 机 械增 强和(或) 电 磁屏蔽 层 , 很多 要求与 金 属 芯 印制板 相同…

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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。
316c
3.1 DIELECTRIC MATERIALS质材料)
3.1.6 Smear Removal (cont.)去钻污(续)
Visual observations made on cross-sections only.对显微切片进行目检观察。
86 IPC-A-600H-201020104
Metal planes are used for mechanical reinforcement and/or electromagnetic shielding for printed boards. Many requirements are the same as
for metal-core printed boards.
属层用作印制板械增强和(或)磁屏蔽很多要求与印制板相同
Target Condition - Class 1,2,3(⽬标条件 - 1,2,3级)
Metal plane setback exceeds the procurement documentation
requirements.
属层大于采文件的要求。
Acceptable - Class 1,2,3(可接受条件 - 1,2,3级)
Metal plane setback is equal to or greater than 0.1 mm [0.0040 in]
(when a value is not specified by the procurement documenta-
tion).
Metal plane setback does not reduce the conductor spacing to less
than the specified minimum on the procurement documentation.
属层等于或大于0.1mm[0.004in](当采文件
出规定值时)
属层没有使间距于采文件规定的最
值。
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。
317a
317b
317c
3.1 DIELECTRIC MATERIALS质材料)
3.1.7 Dielectric Material, Clearance, Metal Plane for Supported Holes(⾦属层上⽀撑孔的质间
87IPC-A-600H-2010 20104
Visual observations made on cross-sections only.对显微切片进行目检观察。
Minimum dielectric thickness is the maximum material condition used for the electrical voltage dielectric strength requirements.
压介质强要求的最大材料条件。
Target Condition - Class 1,2,3(⽬标条件 - 1,2,3级)
The minimum dielectric thickness meets the requirements of the
procurement documentation.
足采文件的要求。
Acceptable - Class 1,2,3(可接受条件 - 1,2,3级)
The minimum dielectric thickness meets the minimum require-
ments of the procurement documentation.
If the minimum dielectric spacing and the number of reinforcing
layers are not specified, the minimum dielectric spacing shall be
0.09 mm [0.0035 in] and the number of reinforcing layers shall be
selected by the supplier.
Low profile copper foils should be used with dielectrics below
0.09 mm [0.0035 in].
足采文件的最低要求。
间距层数未作规定,则最
应当0.09mm[0.0035in]层数应当由供应商
选择
应该使用质低于0.09mm[0.0035in]的低粗糙度铜箔
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。
Notes:
1: Products designed for transmission line impedance applications may have special requirements and measurement method specified on
procurement documentation.
2: When the nominal dielectric thickness on the drawing is less than 90 µm [3,543 µin], the minimum dielectric spacing is 25 µm [984 µin]
and the number of reinforcing layers may be selected by the supplier.
注:
1. 传输线应用设计的产品,可在采文件中规定特要求和测量方法。
2. 当图上的标度小90μm[3543μin]时,则最间距25μm[984μin]层数可以由供应商选择
318a
3.1 DIELECTRIC MATERIALS质材料)
3.1.8 Layer-to-Layer Spacing(层间间
88 IPC-A-600H-201020104
Visual observations made on cross-sections only.对显微切片进行目检观察。