Electronics Forum | Fri Apr 16 11:03:35 EDT 2004 | davef
Your copper corrosion is not good. It indicates that you have not done a good job in cleaning. [We assume this is a medium green color, not unlike the color of the solder mask on your board, that is almost like a translucent lacquer; rather than th
Electronics Forum | Mon Apr 26 09:11:04 EDT 2004 | Daniel
Thanks, We currently use Metcals for our regular work and I was looking at the ERSA system for the BGA rework. From what I have seen it seems simple to use, and since it uses IR you don�t need all the attachments for different size BGA�s. You just
Electronics Forum | Wed May 12 01:40:56 EDT 2004 | Grant Petty
Hi, Thanks for all the advice, and we are looking at everything we know of, but have not had much info back from anyone at Universal yet. We have been interested in their machines too and are going to go to a trade show before we decide. However I
Electronics Forum | Wed May 19 07:38:42 EDT 2004 | Bob L.
I'm trying to help one of our remote sites solve a problem with a warped PBGA. The corners are lifted, creating columnar joints and the central balls are sometimes shorting. I've verified that it's not popcorning and I've got samples going to the l
Electronics Forum | Mon May 24 06:00:23 EDT 2004 | johnwnz
call me picky but doesn't hydrogen combust? maybe soemthing you could do is look at your process and your products and decide if you actually need to run in N2. Yes ok I can hear the crys now but seriously, for the vast majority of things if you have
Electronics Forum | Tue May 25 20:51:20 EDT 2004 | Grant
Hi, Thanks for the info, and this really helps a lot. So the change over time is really just loading the different feeders? That does not seem like too much trouble. How does the X and Y correction on the HSP effect real world placement accuracy? D
Electronics Forum | Wed Jun 02 16:33:08 EDT 2004 | davem
Fuji is the best, but there are other alternatives besides Quad. If you really want to look at Fuji, take a peek at their XP142E series. With "Vision processing on the fly" and a "Mini Turret Head" with 12 placement nozzles it should fit your needs n
Electronics Forum | Fri Jun 04 08:25:06 EDT 2004 | Cal
OK I am game and will put some input here...I do like the Samsung machines for the price and they are easy to program. Another company you may want to look at is Essemtec. ESSEMTEC USA Glasboro, NJ 08028-1499 Steve Pollock Tel. 1/856 218 1131 Fax 1/
Electronics Forum | Wed Aug 18 09:20:22 EDT 2004 | QE
Davef, Sorry for the late response. I was trying to gather more info. The group with low ionic contamination levels came from one of our other facilities. We want to outsource more of our product due to increasing demand. Both groups use the same
Electronics Forum | Fri Jul 23 14:41:41 EDT 2004 | Steve Stach
Dear JSK, It sounds like the root causes of your problem are two fold. First, excessive heat will polymerize the abietic acid found in rosin forming neo-abietic diamers and polymers which are much less soluble than the parent monomer. There are
