PCB壞點英語培訓課程(ppt 36頁)

PCB壞點英語培訓課程目錄：
一、Process Flow
二、Defect Introduction
三、Test

PCB壞點英語培訓課程內容提要：
Surface Treatment(表麵處理)：
Scl hole under size
Scl hole over size
Solder over thickness
Solder lump
Thin solder
Block hole by scl
Copper expose on solder
Contamination on solder
Solder on carbon ink
Solder in hole
Scl hole rough
Poor solder stripping
Poor solder surface
S\M on pad SMD
Pitch width under size
Grey solder surface

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