Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

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What defects can not be found or are very difficult to find with

bphilips

#6488

Locating Defects with 2D AOI. | 7 May, 2001

What defects can not be found or are very difficult to find with 2D AOI?

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Eyal

#6492

Locating Defects with 2D AOI. | 7 May, 2001

All defect types that can not be seen from top view, meaning - any defect which is characterized by more than its top 2D appearance will be hard, if at all possible, to detect by 2D imaging system. This includes:

Lifted leads / co planarity J-leads solder joints Shorts (sometimes) Billboard defects (sometimes) Lifted component (sometimes) Insufficient solder (sometimes)

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Used PCB Equipment - ECM

SP700avi inline stencil printer