IPC-A-600H-2010 中文版 印制板的可接受性 (1).pdf - 第159页

Silver film can be used for electro-static discharge (ESD) shielding in flexible printed boards. Scratches and voids may occur on the surface of the silver film when the liner material is peeled away. 银 膜 可用作 挠 性印制板的 静 电…

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A fold mark is characterized by bending in a sharp angle as shown in Figure 4112a. A bend mark is characterized by a bend whose radius is
an obtuse angle, as shown in Figure 4112b.
叠痕是指如图4112a所示的以锐角角弯曲弯曲是如图4112b所示的弯曲钝角
Target Condition - Class 1,2,3(⽬标条件 - 1,2,3级)
Free of voids, scratches or foreign material.
空洞、划痕或外来夹杂物
Acceptable - Class 1,2,3(可接受条件 - 1,2,3级)
The fold mark meets the requirements of 4.1.1 for coverlay cov-
erage.
No fold marks along the conductor pattern.
No cracks or opening of the conductor pattern.
Bending marks.
叠痕4.1.1节覆盖的覆盖要求。
沿着导体图没有叠痕
体图没有
可有弯曲
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。
4112a
4112b
4.1 FLEXIBLE AND RIGID-FLEX PRINTED BOARDS及刚挠性印制板)
4.1.12 Fold/Bend Marks叠/弯曲痕迹
150 IPC-A-600H-201020104
Silver film can be used for electro-static discharge (ESD) shielding in flexible printed boards. Scratches and voids may occur on the surface
of the silver film when the liner material is peeled away.
可用作性印制板的电释放ESD屏蔽。当覆盖材料表面可能产生划痕和空洞。
Target Condition - Class 1,2,3(⽬标条件 - 1,2,3级)
Free of voids, scratches or foreign material.
空洞、划痕或外来夹杂物
Acceptable - Class 1,2,3(可接受条件 - 1,2,3级)
Voids, scratches or foreign material do not exceed 5 locations per
side.
Voids, scratches or foreign material do not expose metal under-
neath the silver film (exposed coverlay underneath is acceptable).
Voids are less than 3.0 x 3.0 mm [0.118 x 0.118 in] in size.
The width of scratches does not exceed 1.5 mm [0.060 in], and
their length does not exceed 50% of the length of the flexible
printed board.
Touch up by black oil pen (see Figure 4113c).
每面的空洞、划痕或外来夹杂物5处。
空洞、划痕或外来夹杂物未下的覆盖
可接受)
空洞尺寸小3.0x3.0mm[0.118x0.118in]
划痕宽度未超1.5mm[0.060in]且长度未超性印制板
长度50%
色油进行修补(见图4113c
4113a
4113b
4.1 FLEXIBLE AND RIGID-FLEX PRINTED BOARDS及刚挠性印制板)
4.1.13 Silver Film Integrity膜完性)
151IPC-A-600H-2010 20104
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。
4113c
4.1 FLEXIBLE AND RIGID-FLEX PRINTED BOARDS及刚挠性印制板)
4.1.13 Silver Film Integrity (cont.)膜完性(续)
152 IPC-A-600H-201020104