Electronics Forum | Tue Jul 26 08:20:46 EDT 2005 | Bob R.
All you can do is try it. I did a literature search last year on causes of BGA voiding and came up with a pretty long list, sometimes contradictory. I also discussed it with several paste suppliers. What I came away with is that what aggravates voi
Electronics Forum | Tue Jul 26 00:58:11 EDT 2005 | grantp
Hi, It really depends on what your measuring. If it's water, then that has a specific gravity of 1, so with the metric system 1 Kilogram of water is equal to 1 liter of water. That's nice the way they did that. The conversion from 1 US Gallon to 1
Electronics Forum | Tue Jul 26 20:43:46 EDT 2005 | davef
And the reason the connectors aren't on one side of the board is ... Thougts are: * Pealable temporary solder mask * Removable boots Sources of boots that may be ESD protected are: * Kinnarney Rubber; 450 Main St PO Box 37 Mantua, NJ 08051; 856-468
Electronics Forum | Wed Jul 27 11:28:55 EDT 2005 | jh0n!
This may be completely normal, but I'm not used to seeing this with our old SnPb. I'm setting up reflow profiles for a SAC305 alloy, and it seems that on some of our larger pads, the flux seems to pool in the center. Is this perhaps a sign that I'm
Electronics Forum | Wed Jul 27 17:01:14 EDT 2005 | Dreamsniper
Issue: At 60'C test PCB Fails. Operator did simulation. Use of Heat Gun to heat up the BGA to 60'C while PCB is powered and running. At 60'C BGA fails. When pressed system is back which means that something becomes open. Sent BGA for SEM and found t
Electronics Forum | Mon Mar 06 10:02:47 EST 2006 | Mity-C
Just be Careful! We had purchased a Metcal VPI-1000 endoscope. When we began to have problems with the system, I found that Metcal had sold the product. When I asked for the current owner, I was told that could not be disclosed as the official annou
Electronics Forum | Wed Aug 03 10:35:06 EDT 2005 | Wonderboy
Wait. I think you need to add that any product sold in EUROPE needs to be lead-free by July 1st, 2006. And let's clarify further. Lead is just one of numerous elements that will be restricted. In fact, quoted directly from the directive: "Member Stat
Electronics Forum | Fri Aug 05 11:32:29 EDT 2005 | saragorcos
Hi Sandy, Here are some suggestions for an optimum cleaning process for cleaning under BGAs if they are assembled to the board to add to the great tips Shean already listed: - Use a good saponifier w/ DI water - an effective saponifier will be able
Electronics Forum | Wed Aug 03 10:15:11 EDT 2005 | cyber_wolf
Stefan, Was this machine a Fuji by chance ? Did you buy this machine ? If so why would you or anyone buy a machine sight unseen that is "way overpriced" Just curious.. I have been told by representatives of major SMT machine manufacturers to BEWARE
Electronics Forum | Wed Aug 03 15:35:27 EDT 2005 | mgc
The machine you are buying is probably going to > cost less than the service visit. Then with all > the problems found......hmmmmm....could get real > ugly.......shoulda just bought a new > machine.....hahahhaa " An assessment could suggest tha
