IPC-A-600H-2010 中文版 印制板的可接受性 (1).pdf - 第129页

Blind via holes should be filled or plugged with a polymer or solder mask to prevent solder from entering them as solder in the small holes tends to decrease reliability. Incomplete via fill may result in printed board d…

100%1 / 180
Target Condition - Class 1,2,3(⽬标条件 - 1,2,3级)
No separation between the internal layer and plating in the hole.
Direct bond of plated copper to layer foil copper. Line of demar-
cation caused by preferential etching of electroless copper
deposit.
中内层铜箔镀层没有分镀层与内层铜箔直接接
合,两的分线是由于镀铜优先刻而的。
Acceptable - Class 2,3(可接受条件 - 2,3级)
No separation evident.
没有分象。
Acceptable - Class 1(可接受条件 - 1级)
Slight line of demarcation and localized minor innerlayer separa-
tion that does not exceed specified requirements.
微的分线并有微的部内,但未超过规
定的要求。
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。
3315a
3315b
3315c
3.3 PLATED-THROUGH HOLES – GENERAL(镀覆孔 则)
3.3.15 Innerlayer Separation Horizontal (Transverse) Microsection层分 ⽔平横向)显微切⽚)
120 IPC-A-600H-201020104
Visual observations made on cross-sections only.对显微切片进行目检观察。
Blind via holes should be filled or plugged with a polymer or solder mask to prevent solder from entering them as solder in the small holes
tends to decrease reliability. Incomplete via fill may result in printed board delamination due to the rapid expansion of entrapped air pockets
or flux contaminants during solder reflow processes. Requirements for buried via fill are listed below.
应该用焊剂充或以防止料进,因为小孔内有料容低可靠性。孔未填满时,在再过程
中,夹带的空助焊剂污染物会膨胀而导致印制板分要求如下:
Target - Class 1,2,3(⽬标条件 - 1,2,3级)
Complete fill of blind or buried via with laminating resin or similar fill
material.
/孔完全填满压树脂或类材料。
Acceptable - Class 1,2,3(可接受条件 - 1,2,3级)
At least 60% buried via fill with laminating resin or similar fill material.
压树脂或类充材料至少60%
Acceptable - Class 2,3(可接受条件 - 2,3级)
At least 60% fill for blind vias with an aspect ratio greater than 1:1 or as
specified in the procurement documentation.
厚径比大于1 : 1 孔至少被60%或符合采文件规
定。
Note: Through hole fill requirements are AABUS.
注: 要求由供需双方协商确定。
3316a
3316b
3.3 PLATED-THROUGH HOLES – GENERAL(镀覆孔 则)
3.3.16 Material Fill of Blind and Buried Vias/导通孔的材料填塞)
121IPC-A-600H-2010 20104
Visual observations made on cross-sections only.对显微切片进行目检观察。
Acceptable - Class 1(可接受条件 - 1级)
Buried vias completely void of fill material.
完全没有材料。
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。
Note: Through hole fill requirements are AABUS.
注:
要求由供需双方协商确定。
3316c
3.3 PLATED-THROUGH HOLES – GENERAL(镀覆孔 则)
3.3.16 Material Fill of Blind and Buried Vias (cont.)/导通孔的材料填塞(续)
Visual observations made on cross-sections only.对显微切片进行目检观察。
122 IPC-A-600H-201020104