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

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


BGA rework rate

#32549

BGA rework rate | 10 February, 2005

Could anyone advise what BGA rework rate we should expect with product that has 4 BGAs (224 pins, 196 pins, 160 pins, 48 pins). Negative factor is that we have old and tired pick & place - Panasonic MPA-G1 or MPA-V without AOI.

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RDR

#32552

BGA rework rate | 10 February, 2005

What is the pitch of these components? if they are 1mm and above you could realisticaly expect >99% (there will always be that one that gets jacked somehow). Your old placement equipmment may affect this by dropped parts that get underneath the BGA, etc.. hopefully the placement accuracy will at least get the parts halfway on pad and they will align themselves during reflow. I have found the BGA process to be the most robust for any pin out type device. they are equal to .050" pitch components. Do some profiling and check your equipment repeatability to make sure that it will place where you tell it and you will have few if any problems.

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#32578

BGA rework rate | 11 February, 2005

Thank you very much for your answer. We had: 1- 224 pins, size 19*19 mm, pitch 0.8 mm 4- 48 pins, size 11*7 mm, pitch 0.75 mm 1- 160 pins, size 15*15 mm, pitch 1 mm 1- 196 pins, size 15*15 mm, pitch 1 mm How many defects I should expect with those?

Is it reasonable to buy BGA rework system, AOI, or X-ray?

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