Electronics Forum: bga underfill (Page 1 of 14)

BGA underfill

Electronics Forum | Tue Sep 20 08:53:13 EDT 2011 | jocelynlauzon

My company is looking for an IPC expert consultant in BGA underfilling to support an important contract that is being prepared. We are looking for someone with hands-on experience with large (~2"x2", with as much as 1800 pin, 1mm pitch, 0.5mm ball di

BGA underfill

Electronics Forum | Thu Sep 22 16:06:07 EDT 2011 | davef

Underfilling BGA is an uncommon practice. We'd start looking to find a consultant recommended by our: * Dispenser company * Underfill supplier

BGA underfill

Electronics Forum | Thu Sep 22 14:54:01 EDT 2011 | hegemon

You might find a lot of experience in the forum here, but maybe not so many consultants for this niche. BGA underfill is not rocket science, and in my opinion, the key items are the material chracteristics, and the dispensing method and pattern. Fo

Questions on underfill process

Electronics Forum | Fri Jun 08 07:52:13 EDT 2007 | zanolli

We are looking at a specialized method of direct soldering ceramic circuit modules (maybe 40mm square) to a mother board with solder joints on only 2 of the 4 sides. These modules would be oriented horizontally, or mezzanine like, to the mother board

BGA underfill necessary with conformal coat?

Electronics Forum | Mon Apr 01 20:33:30 EST 2002 | davef

Regarding your underfil ... * What material did you use as an underfil? * What machine and technique did you use to apply the underfil? * What type of component were you underfilling? * What was the end-use environment?

BGA underfill necessary with conformal coat?

Electronics Forum | Wed Mar 27 18:23:01 EST 2002 | kmorris

Does anyone have experience doing conformal coating over Plastic BGA in High-Rel PCB assembly? Is underfill necessary to avoid problems with entrapped air, etc? Our application is a 17x17mm BGA, 256 I/O. We are assembling with a water soluable pas

BGA underfill necessary with conformal coat?

Electronics Forum | Mon Apr 01 13:00:27 EST 2002 | BTaylor

We had a problem with conformal coating getting under an IC and with Temp. and vibration would cause cracking of the solder bump, underfill solved the problem.

BGA underfill necessary with conformal coat?

Electronics Forum | Wed Apr 03 10:50:06 EST 2002 | BTaylor

Any time Dave I can tell from your responses you have been around this block as many times as I have.Your right automotive is tough nowadays not only from the quality standpoint, now they want everything for free.

BGA underfill necessary with conformal coat?

Electronics Forum | Tue Apr 02 22:52:38 EST 2002 | davef

Tks BT Can't be many places tougher than automotive, 'cept maybe oil field, down pipe. We use Dexter Hysol flow underfills for both 1 thou and 3 thou gaps, but they wouldn't come close to filling under a BGA. Most BGA are sitting about 16+ thou fr

underfilling of bga

Electronics Forum | Fri Mar 19 10:02:44 EDT 2010 | karlo

There is a wide range of BGA underfills to satisfy specific needs. Some are designed for those who place a premium on high speed, high volume processing, shock or drop test perforamnce, and ease of reworkability. Others are designed for those who p

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