IPC-A-600H-2010 中文版 印制板的可接受性 (1).pdf - 第63页

T arget Condition - Class 1,2,3 (⽬标条件 - 1,2,3级) • No solder mask misregistration. • 未 出现 阻 焊 膜 错 位 。 Acceptable - Class 1,2,3 (可接受条件 - 1,2,3级) • Misregistration to copper-defined lands does not expose adjacent, electrica…

100%1 / 180
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
Solder Mask-Defined Lands: A portion of the conductive pattern, used to connect electronic component ball terminations, (BGAs, Fine-
Pitch BGAs, etc.), where the solder mask encroaches on the edges of the land to restrict the ball attachment within the solder mask profile.
阻焊膜限定的焊盘:导电的一部分,用来连电子件的形端BGABGA等)边缘
制在的范内。
Target Condition - Class 1,2,3(⽬标条件 - 1,2,3级)
The solder mask overlap is centered around the lands.
重叠区以为中在其
Acceptable - Class 1,2,3(可接受条件 - 1,2,3级)
Misregistration creates breakout of the solder mask on the land of
not more than 90°.
使上的出区域不90°
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。
2931a
2.9 SOLDER MASK(阻焊膜(阻焊剂)
2.9.3.1 Ball Grid Array (Solder Mask-Defined Lands)(球栅列阵(阻焊膜限定的焊盘)
56 IPC-A-600H-201020104