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Post Reballing Solder Ball Inspection

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#69574

Post Reballing Solder Ball Inspection | 25 June, 2013

We are looking for a recommendation for a company that can perform solder ball inspection on BGAs. The devices are in trays and the the challenge is the ultra fine pitch (0.4mm) and ball size (0.25mm diam). We are looking for ball diameter and coplanarity.

Thanks!

Bob

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#69594

Post Reballing Solder Ball Inspection | 26 June, 2013

Thinking about it... If your sphere diameters were all the same, then your planarity should be established. Sounds like a job for an AOI type machine, with a laser height checker.

I take it you have many of these to check, and are looking for something automated?

If it is just a few, a sharp inspector should be able to check planarity, and with an eye loupe and reticle be able to judge the ball diameter. How I would approach this might hinge on the volume. 'hege

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#69608

Post Reballing Solder Ball Inspection | 27 June, 2013

I would suggest that you go to the X-Ray world. I know for sure that Dage(Nordson Company) can make actual u-cut for the ball of the part. They can see and measure everything in 3D. I am sure if they can do it other X-ray machines can probably do it too. If it is a one time job just send it to somebody who has the equipment to do it. Good Luck!

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