IPC-A-600H-2010 中文版 印制板的可接受性 (1).pdf - 第56页

An etched marking is produced the same as the conductors on the printed board. As a result, the following criteria shall be met for etched marking: 蚀 刻 标 记 的制作和印制板上的 导 体制作是 相同 的。因此, 蚀 刻 标 记 应当 符合下列要求。 T arget Condition -…

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印制板上的标信息(部件应当永久性的,应当所规定的印制板环境测试和。标在本文件要求的范
应当的。印制板应当在不大于2倍数下进行检验。当采用导电油时,它应该IPC-6010系列规范
的要求。
本节(包括光、标、条等)规定了所有标的通用要求,并对下列类的标规定了特准则:
的标
印或盖印的标
有规定,每一的印制板、每一块鉴定测试板、每质量一性测试路(对于每附连
文件要求加标和制造商的识别(如用板的商业及政府机构代或商标等)。制造标可采用与生
导电相同的工,或采用永久性的有防性的可以作为提供标的目的采用表面上作标
永久性的标导电性标,不 的或色导电视为路的电气,它不应该电气间距的要
求。所有标要与材料、部件容,各种测试,并在任何情况下不可影响印制板的性能。
尽管在在制板的使用部分用印标是可接受的,但不允许用在品板上。刻式任何基板内的标均按划
样对
2.8
MARKING(标记)
Introduction(引⾔(续)
47IPC-A-600H-2010 20104
An etched marking is produced the same as the conductors on the printed board. As a result, the following criteria shall be met for etched
marking:
的制作和印制板上的体制作是相同的。因此,应当符合下列要求。
Target Condition - Class 1,2,3(⽬标条件 - 1,2,3级)
Characters are legible.
Minimum conductor spacing requirements have also been main-
tained between etched symbolization and active conductors.
字符均清
字符和有体之小导间距要求。
Acceptable - Class 3(可接受条件 - 3级)
Marking defects regardless of cause, (i.e., solder bridging, over-
etching, etc.) as long as characters are legible.
Marking does not violate the minimum electrical clearance limits.
Edges of the lines forming a character may be slightly irregular.
在字符的情况下,标缺陷(例如、过
等)可接受。
反最小电气间要求。
字符的线条边缘可以微的不规则。
Acceptable - Class 2(可接受条件 - 2级)
Marking defects regardless of cause, (i.e., solder bridging, over-
etching, etc.) as long as characters are legible.
Marking does not violate the minimum electrical clearance limits.
Width of the lines forming a character may be reduced by up to
50%, providing they remain legible.
在字符的情况下,标缺陷(例如、过
等)可接受。
反最小电气间要求。
字符的的线条宽度50%要线条仍可
281a
281b
2.8 MARKING(标记)
2.8.1 Etched Marking(蚀刻标记)
48 IPC-A-600H-201020104
Acceptable - Class 1(可接受条件 - 1级)
Marking defects regardless of cause, (i.e., solder bridging, over-
etching, etc.) as long as characters are legible.
Marking does not violate the minimum electrical clearance limits.
Legends are irregularly formed but the general intent of the leg-
end or marking is legible.
在字符的情况下,标缺陷(例如、过
等)可接受。
反最小电气间要求。
字符状不规则,但字符或标的基本
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。
281c
281d
2.8 MARKING(标记)
2.8.1 Etched Marking (cont.)(蚀刻标记(续)
49IPC-A-600H-2010 20104