实用标准文案
6.5.6 6.5.7
板边接点毛头 ................................................................................................. 30 金手指镀层附着力（Adhesion of Overplate) ....................................... 31
6.6 孔 ...................................................................................................................................... 31
6.6.1 6.6.2 6.6.3 6.6.4 6.6.5 6.6.6 6.6.7 6.6.8 6.6.9
孔与设计不符 ................................................................................................. 31 孔的公差 .......................................................................................................... 31 铅锡堵孔 .......................................................................................................... 32 异物（不含阻焊膜）堵孔............................................................................. 33 PTH导通性 ...................................................................................................... 33 PTH孔壁不良.................................................................................................. 33 爆孔 .................................................................................................................. 33 PTH孔壁破洞.................................................................................................. 33 孔壁镀瘤/毛头（Nodules/Burrs) ............................................................. 35
6.6.10 晕圈（Haloing） .......................................................................................... 35 6.6.11 粉红圈（Pink Ring)...................................................................................... 36 6.6.12 表层PTH孔环（External Annular Ring-Supported Holes).............. 36 6.6.13 表层NPTH孔环（External Annular Ring-Unsupported Holes) ..... 36 6.7 焊盘 .................................................................................................................................. 37
6.7.1
焊盘露铜 .......................................................................................................... 37
精彩文档
华为的刚性PCB检验实用实用实用标准
