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…

Target Condition - Class 1,2,3(⽬标条件 - 1,2,3级)
• Edge condition - smooth, no nicks.
• 边缘状况 - 光滑,无缺口。
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,但未磨损。
• 缺 口 深 度 不大于板边缘与最近导体 间距的 50%或不大于
2.5mm[0.0984in],取两者中的较小值。
Nonconforming - Class 1,2,3(不符合条件 - 1,2,3级)
• Defects either do not meet or exceed above criteria.
• 缺陷不符合或超出上述要求。
图212a
图212b
图212c
2.1 BOARD EDGES(板边缘)
2.1.2 Nicks(缺⼝)
9IPC-A-600H-2010 2010年4月

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.
• 晕圈的范围使从板边缘与最近导电图形间未受影响的距离不
小于最小侧向导体间距,或不小于100µm[3,937µin],取两
者中的较小值。
Nonconforming - Class 1,2,3(不符合条件 - 1,2,3级)
• Defects either do not meet or exceed above criteria.
• 缺陷不符合或超出上述要求。
图213a
图213b
图213c
2.1 BOARD EDGES(板边缘)
2.1.3 Haloing(晕圈)
10 IPC-A-600H-20102010年4月

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
为了帮助鉴别和处置层压板缺陷,业界已建立了无损目视检查准则,详见以下章节。这些章节给出了下列各种状况的定义、示意
图和照片,精确地定义并区分了下列状况:
基材表⾯ 2.2
• 露织物 2.2.1
• 显布纹 2.2.2
• 暴露/断裂的纤维 2.2.3
• 麻点和空洞 2.2.4
基材表⾯下 2.3
• 白斑 2.3.1
• 微裂纹 2.3.2
• 分层/起泡 2.3.3
• 外来夹杂物 2.3.4
重要的是,我们要注意层压板缺陷可能是在印制板生产商从层压板商处接收板材时就已经存在,或在印制板制造期间才显露出
来。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)
11IPC-A-600H-2010 2010年4月