Full Site - : void in lga (Page 16 of 39)

Voiding in uBGA's w/blind uvia's in pads

Electronics Forum | Tue Jan 21 16:28:02 EST 2003 | tony_sauve

Sorry I didn't close this one off last year... We had some failure analysis done on these PCB's ( 3D x-ray,microsectioning,SEM) and the results definitively proved that there was some contamination @ the base of the uvia's that had the voiding. It ap

Voiding in uBGA's w/blind uvia's in pads

Electronics Forum | Mon May 05 11:48:33 EDT 2003 | mk

We have had good luck with via in pads using solid solder deposition. Please contact me off line or provide a number I can call. Thanks Matt Kehoe m.j.kehoe@att.net

Voiding in uBGA's w/blind uvia's in pads

Electronics Forum | Tue Nov 20 20:58:43 EST 2001 | davef

Very coo!!! [You have done an outstanding job of describing your situation.] I guess the via are connected to a BIG chunk of copper that affects your profile on that pad / ball. At the same time, run a profile each on a: * Void pad * Nonvoid pad

Voiding in uBGA's w/blind uvia's in pads

Electronics Forum | Sat Nov 24 22:15:16 EST 2001 | Glenn Robertson

Tony, I'm not sure if even baking will stop the voids if you have gaps in the plating. It probably doesn't take much moisture or even trapped air. I'm not speaking from a lot of direct experience here, so please run the tests and let us know wh

Voiding in uBGA's w/blind uvia's in pads

Electronics Forum | Thu Nov 22 12:56:12 EST 2001 | tony_sauve

Thanks for the comments & suggestions. Here's some info garnered from a telecon w/the PCB Fab house: -the blind via's extend from layer 2-17...this was a revelation. The info from our customer was that the via's only extended down 2 layers. Did I men

Voids in the joints

Electronics Forum | Sat Dec 20 14:06:58 EST 1997 | Vincenzo Longobardo

what is your experience about the presence of the voids in the joints ? Are they dangerous and when ?

Void in BGA

Electronics Forum | Mon Nov 11 10:57:03 EST 2002 | davef

Search the fine SMTnet Archives for background on voiding in BGA

Voids in solder fillet

Electronics Forum | Thu Apr 17 13:35:49 EDT 2003 | davef

A-610 talks to acceptable voiding.

Solder voids in PTH

Electronics Forum | Tue Feb 19 22:50:00 EST 2008 | amarpreet41

Do you of reducing hole size of DIMM connector will improve solder voids??

Voiding in Underfill process

Electronics Forum | Mon Jan 21 11:37:35 EST 2008 | rayjr1491

Is there a tool to check for voiding in a Underfill process?


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