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RE: Protel 99 SE和AD无铜孔及无铜槽,有铜孔及有铜槽做法及生产工艺 [修改] (需审核)
dengguoqiang 发表于 2018-10-13 16:07
常规工艺:最小线宽线距0.15mm 最小过孔0.3mm 外径0.6mm
BGA 间距≥0.15MM(6mil);BGA焊盘≥0.55MM(22mil);B ...
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