IPC-A-600H-2010 中文版 印制板的可接受性 (1).pdf - 第62页

T arget Condition - Class 1,2,3 (⽬标条件 - 1,2,3级) • No solder mask misregistration. The solder mask is centered around the lands within the nominal regis- tration spacings. • 未 出现 阻 焊 膜 错 位 。 阻 焊 膜 在标 称 的 重 合 度间 距 内,以 焊 盘 …

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Target Condition - Class 1,2,3(⽬标条件 - 1,2,3级)
The solder mask exhibits uniform appearance over the base mate-
rial surface, conductor sides and edges. It is firmly bonded to the
printed board surface with no visible skipping, voids or other
defects.
在基材表面、面和边缘均匀的外表,
牢固接在印制板表面上,可见的印、空洞或其它
缺陷。
Acceptable - Class 2,3(可接受条件 - 2,3级)
In areas containing parallel conductors, adjacent conductors are
not exposed by the absence of solder mask except where space
between conductors is intended to be exposed.
Touch up, if required to cover these areas with solder mask, is of
a material that is compatible to and of equal resistance to solder-
ing and cleaning as the originally applied solder mask.
在有体的区域内,除了体之有意不覆盖焊剂
外,没有由于缺焊剂而使
如要求用修补以覆盖这些区域时,使用与最使用的
焊剂相容的并具有接性和性的材料。
Acceptable - Class 1(可接受条件 - 1级)
The missing solder mask does not reduce the conductor spacing
between conductive patterns below the minimum acceptability
requirements.
There is skipping of the solder mask along the sides of the con-
ductive patterns.
使间距少至低于最可接收性要
求。
沿着导电形侧边可有印的
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。
291a
291b
291c
2.9 SOLDER MASK(阻焊膜(阻焊剂)
2.9.1 Coverage Over Conductors (Skip Coverage)(导体上的覆盖(跳印)
53IPC-A-600H-2010 20104
Target Condition - Class 1,2,3
(⽬标条件 - 1,2,3级)
No solder mask misregistration. The solder mask is
centered around the lands within the nominal regis-
tration spacings.
出现在标度间
内,以为中在其
Acceptable - Class 1,2,3
(可接受条件 - 1,2,3级)
Misregistration of the mask to the land patterns but
the solder mask does not violate minimum annular
ring requirements.
No solder mask in PTHs, except those not intended
for soldering.
Adjacent, electrically isolated lands or conductors
are not exposed.
盘错,但不反最小环宽
求。
除那些接的外,无阻
露相互电气体。
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。
292a
292c
292e
292b
292d
292f
2.9 SOLDER MASK(阻焊膜(阻焊剂)
2.9.2 Registration to Holes (All Finishes)(与孔的重合度(所有涂覆层)
54 IPC-A-600H-201020104
Target Condition - Class 1,2,3(⽬标条件 - 1,2,3级)
No solder mask misregistration.
出现
Acceptable - Class 1,2,3(可接受条件 - 1,2,3级)
Misregistration to copper-defined lands does not expose adjacent,
electrically isolated lands or conductors.
No solder mask encroachment on edge board printed contacts or
test points.
On surface mount lands with a pitch of 1.25 mm [0.04921 in] or
greater, encroachment is on one side of land only and does not
exceed 0.05 mm [0.0020 in].
On surface mount lands with a pitch less than 1.25 mm [0.04921
in], encroachment is on one side of land only and does not exceed
0.025 mm [0.000984 in].
铜箔限定的没有露相电气
体。
没有印制接片或测试
对于节大于或等于1.25mm[0.04921in]的表面装焊
的一0.05mm[0.0020in]
对于节距小1.25mm[0.04921in]的表面装焊
的一0.025mm[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。
293a
293b
293c
2.9 SOLDER MASK(阻焊膜(阻焊剂)
2.9.3 Registration to Other Conductive Patterns(与其它导电图形的重合度)
55IPC-A-600H-2010 20104