Electronics Forum | Wed May 02 10:45:24 EDT 2007 | bartlozie
I agree with Bob, Do you have a long TAL, ENIG needs a longer TAL then other boards, on the side of this, Latest year there are a lot of bad Au plated boards, we had 3 batch of bad plated boards in the last year. indeed maybe the problem isn't the
Electronics Forum | Wed Jan 13 22:01:42 EST 1999 | Dave F
| This question is directed to anyone having eperience with Sn62Pb36Ag2 solder balls for BGA's. | Have you seen anything like a rough, raisin-like surface texture after ball attach? If so, what did you do about it? | | Thanks! | Jenna: We've used
Electronics Forum | Fri Jun 10 14:22:53 EDT 2005 | pr
Are the local fids. necessary? Anyway, I can't think of any reason the local fids. would have to be spaced exactly the same distance from the part. We place BGA's and QFP's using board fids, and have yet to find a problem that local fids helped fix.
Electronics Forum | Fri Jan 17 09:38:20 EST 2003 | Grant Petty
Hi, We have a BGA that uses .4mm diameter PCB pads on the BGA itself, however we have decided to use .5mm pads on the PCB, to help paste release from the stencil. Is this a bad thing, having different size pads on the PCB compared to the BGA itself
Electronics Forum | Wed Jan 03 09:59:52 EST 2007 | Jim
Hi, I was looking for information on failure rates for BGA components. I am analyzing our BGA rework rates and find it difficult to define a root cause when a remove and replace of the BGA component corrects the test errors. Inspection prior to re
Electronics Forum | Wed Jun 11 11:33:07 EDT 2003 | tt
We have been looking around at all of the various BGA visual inspection systems, (i.e. ERSAscopes like contraptions). It seems like the number of different manufacturer's of these types of systems has exploded in the past couple of years, and it lo
Electronics Forum | Tue Feb 06 11:14:58 EST 2007 | CL
Good Morning All, We are looking at new equipment for reworking BGA components that is RoHS capable. I wanted to get a feel for what others in the industry are using and get some feedback good or bad on these systems. We are currently using an Air
Electronics Forum | Wed Feb 14 16:45:01 EST 2001 | Antonio
I'm sorry, I should clarify. The average is one out of six boards. It's not consistant as to how many are good before a really bad one. Sometimes two in a row, sometimes ten. Right now we are wiping every 2 boards. Antonio
Electronics Forum | Thu Jun 24 09:24:03 EDT 2004 | Rob
The smallest component we use is 0402. Solder paste is Kester 256. Printer is MPM Ultraprint 2000. Stencil is 6 mil. I didn't here anything bad (rework or whatnots) in terms of soldering of those components.
Electronics Forum | Mon Jun 28 15:27:33 EDT 2004 | davef
Oh, you posted something about that a couple of weeks ago. Nice that you have the justification, too bad that's the way you needed to get it.
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