IPC-A-600H-2010 中文版 印制板的可接受性 (1).pdf - 第93页

Smear removal is defined as the removal of resin debris which results from the formation of the hole wall. 去钻 污 是指 去 除 孔 壁 成 形 过程中产生的 树脂 残 渣 。 Acceptable - Class 1,2,3 (可接受条件 - 1,2,3级) • Smear removal has not been etched…

100%1 / 180
Target Condition - Class 1,2,3(⽬标条件 - 1,2,3级)
Uniform negative etchback of copper foil 0.0025 mm
[0.0000984 in].
铜箔均匀负凹蚀深0.0025mm[0.0000984in]
Acceptable - Class 3(可接受条件 - 3级)
Negative etchback less than 0.013 mm [0.000512 in].
负凹0.013mm[0.000512in]
Acceptable - Class 1,2(可接受条件 - 1,2级)
Negative etchback less than 0.025 mm [0.000984 in].
负凹0.025mm[0.000984in]
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。
3152a
3152b
3152c
3.1 DIELECTRIC MATERIALS质材料)
3.1.5.2 Negative Etchback负凹蚀)
84 IPC-A-600H-201020104
Visual observations made on cross-sections only.对显微切片进行目检观察。
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