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

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AOL

Barb

#31558

AOL | 3 December, 2004

We are implementing an AOL inspection system into our surface mount process. I would like to hear from anyone with an opinion on the different types of AOL and why they feel this is better than another one. Any information will be greatly appreciated.

We are looking for a system for bga, 0402, polarity, wrong part, etc.

Thanks

Barb

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Barb

#31559

AOI | 3 December, 2004

We are implementing an AOI inspection system into our surface mount process. I would like to hear from anyone with an opinion on the different types of AOL and why they feel this is better than another one. Any information will be greatly appreciated.

We are looking for a system for bga, 0402, polarity, wrong part, etc.

Thanks

Barb

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#31561

AOL | 3 December, 2004

Hi Barb,

First of all I think you are looking for AOI system, not AOL. As per my experience AOI checks for present, absence of the component, wrong polarity, wrong component, misaligned component, tomb stone, upside down etc. It also looks for solder defects. These all futures depends upon how good you did porgram. There are several AOI machines.

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#31562

AOI | 3 December, 2004

AOI (automatic optical inspection) is not capable to detect hidden joints (BGA, J-leads,...) defects. For that you will need X-Ray (AXI = Automated X-ray Inspection). Look @ http://www.agilent.com, they have both systems. It is usual that PWB manufacturers combine both systems. Actually the best combination is AOI, AXI, ICT.

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