IPC-A-600H-2010 中文版 印制板的可接受性 (1).pdf - 第94页

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 超 出上述要求。 图 316c 3.1 DIELECTRIC MA TERIALS ( 介 质材料) 3.1.6 Smear Removal (cont.) ( 去钻污 (续) ) Visual observations …

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Smear removal is defined as the removal of resin debris which results from the formation of the hole wall.
去钻是指过程中产生的树脂
Acceptable - Class 1,2,3(可接受条件 - 1,2,3级)
Smear removal has not been etched back greater than 0.025 mm
[0.001 in].
Random tears or drill gouges producing small areas where the
0.025 mm [0.001 in] depth has been exceeded shall be evaluated
as etchback per 3.1.5.1.
Smear removal sufficiently meets the acceptability criteria for
plating separation (3.3.14).
去钻产生的未超0.025mm[0.001in]
对于区域上0.025mm[0.001in]
的情况,应当3.1.5.1节作为进行评价。
去钻污完全符合3.3.14镀层的可接受性准则。
316a
316b
3.1 DIELECTRIC MATERIALS质材料)
3.1.6 Smear Removal去钻污
85IPC-A-600H-2010 20104
Visual observations made on cross-sections only.对显微切片进行目检观察。
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。