IPC-A-600H-2010 中文版 印制板的可接受性 (1).pdf - 第18页

T arget Condition - Class 1,2,3 (⽬标条件 - 1,2,3级) • No haloing. • 无晕圈 。 Acceptable - Class 1,2,3 (可接受条件 - 1,2,3级) • Distance between the haloing penetration and the nearest conduc- tive feature is not less than the minimum…

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Target Condition - Class 1,2,3(⽬标条件 - 1,2,3级)
Edge condition - smooth, no nicks.
边缘状况 -
Acceptable - Class 1,2,3(可接受条件 - 1,2,3级)
Edges are rough but not frayed.
Nicks do not exceed 50% of the distance from the printed board
edge to the nearest conductor or 2.5 mm [0.0984 in], whichever is
less.
边缘粗糙,但磨损
不大于板边缘与最近导 间距 50%或不大于
2.5mm[0.0984in]中的较小值。
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。
212a
212b
212c
2.1 BOARD EDGES(板边缘)
2.1.2 Nicks(缺⼝)
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Target Condition - Class 1,2,3(⽬标条件 - 1,2,3级)
No haloing.
无晕圈
Acceptable - Class 1,2,3(可接受条件 - 1,2,3级)
Distance between the haloing penetration and the nearest conduc-
tive feature is not less than the minimum lateral conductor spac-
ing, or 100 µm [3,937 µin] if not specified.
晕圈的范使从板边缘与最近导电间未受影响的距离
于最向导间距,或不100µm[3,937µin]
中的较小值。
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。
213a
213b
213c
2.1 BOARD EDGES(板边缘)
2.1.3 Haloing(晕圈)
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Identification of Imperfections
Nondestructive visual criteria have been established to aid in the identification and disposition of laminate defects. Refer to the following
sections where definitions, illustrations and photographs have been provided which precisely define and identify the following conditions:
Surface 2.2
weave exposure 2.2.1
weave texture 2.2.2
exposed/disrupted fibers 2.2.3
pits and voids 2.2.4
Subsurface 2.3
measling 2.3.1
crazing 2.3.2
delamination/blister 2.3.3
foreign inclusions 2.3.4
It is important to note that laminate defect conditions may exist when the fabricator receives the material from the laminator, or may become
apparent during the fabrication of the printed board. Some defects may be induced during processing.
瑕疵的鉴别
为了和处板缺陷,业无损目视检查准则,见以下章节。这些章节给出了下列各种状况的定、示意
图和照片,确地定并区分了下列状况:
基材表⾯ 2.2
露织物 2.2.1
2.2.2
/断裂纤维 2.2.3
麻点和空洞 2.2.4
基材表⾯下 2.3
白斑 2.3.1
2.3.2
/起泡 2.3.3
来夹杂物 2.3.4
要的是,我们板缺陷可能是在印制板生产商从板商处接收板材时就已经在,或在印制板制造期间才显
。有些缺陷则可能是在加工过程中产生的。
2.2 BASE MATERIAL SURFACE(基材表⾯)
Introduction(引⾔)
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