Electronics Forum | Tue Apr 01 17:29:58 EST 2003 | davef
R1: So if I understand you right, it could be possible that gold dissolved, but the ball still didn't wet to the underlying nickel. D1: Correct. The gold dissolves into the solder first. The solder wets to the nickel second. If you nickel is corro
Electronics Forum | Tue Apr 01 18:42:18 EST 2003 | rdr
Well, here is what I have found so far. I have removed the top of the BGA and found that the ball had detached from the package. Three balls were removed with the two adjacent balls pulling the pads off the board and stayed attached to the BGA while
Electronics Forum | Thu Apr 03 09:08:50 EST 2003 | rdr
Thanks Scott,Iman, The problem has been isolated to detachment from package so I believe that there are no fabrication issues related to the Gold on the PCB. What is a Moyet analisys? where can I find more info? Dave, I am still waiting on Altera t
Electronics Forum | Thu Apr 03 09:48:31 EST 2003 | davef
R1: Contacting Altera to find out if the BGA pads are gold. D1: Bet money the pads were ENIG. R2: Contacting Altera to find out if they use abrasives. D2: If abrasives were the problem, you�d see it in many pads, especially those close to the probl
Electronics Forum | Thu Apr 03 11:17:17 EST 2003 | rdr
Well, first off now I'm just starting to believe that we are fracturing again. But here is some more input D1 ENIG? I would not have thought that they would be but as usual you are probably right. D2 Again I would have to agree about it should affe
Electronics Forum | Fri Apr 02 10:26:13 EDT 2010 | fishingfool
Manjunath The top camera will be used for probably 90-95% of your inspection needs. However, without side cameras that 5-10% of uninspected parts can be a real pain to manually verify. What you need to figure out is what is your product to inspe
Electronics Forum | Fri Nov 06 07:46:33 EST 2015 | clampron
Good Morning RedChilli, I have worked with Mirtec for quite a few years. I have looked at some of the other machines mentioned but have no practical experience with them. I started with the Mirtec MV-2 (long ago)due to the success of this platform,
Electronics Forum | Wed Apr 28 11:47:34 EDT 1999 | Frank Boyko
| | We use Immersion Gold (AuNi) for our 20 mil pitch and BGA boards. | | Lately, we have been having solderability problems with boards with this surface from some of our suppliers. | | | | We are considering trying boards with White Tin solderable
Electronics Forum | Sun Mar 07 21:26:54 EST 1999 | Chris G.
| My printer evaluation has come down to the Fuji GP-6 or the Dek 265LT. I'm looking for experienced opinions on both of these options, we're currently running an older vintage Dek 265 printer that gives us constant electronic system problems. The v
Electronics Forum | Tue Feb 19 10:09:48 EST 2002 | caldon
I always look at the support structure. This is where I feel the real Dollars and cents come into play. Sure you can calculate the derated value over months or years. But If your machine is in a "machine down" situation the derated value does not cha
