Electronics Forum | Thu Feb 28 16:40:04 EST 2002 | liviuj
>Dear SMTneter, >>I am loonkig for some information about how to rework a >>BGA. >>Some technical info explaing how to put solder past >>manualy, soldering manualy, tips and so on. >>Where can I find something about? >>Thanks in advance >>Marcos Hi
Electronics Forum | Tue May 21 17:16:51 EDT 2002 | davef
Larry, Yes, no matter how much you�d like to avoid using NC, you probably will have to start using the stuff, if the design [sales, in your case] types have their way. We can clean WS under 1mm and 1.25mm pitch BGA. For 0.8mm pitch BGA, we use NC.
Electronics Forum | Mon Apr 12 09:36:57 EDT 2004 | wgaffubar
Russ, These are the pb free components that you mentioned that are coming around the bend. Not the old CBGA's. I use to use CBGA's alot with former company. These are 15 x 15 mm plastic BGA's with 14 mil pg free solder balls going on 8 mil gold pads.
Electronics Forum | Mon Feb 27 17:08:15 EST 2006 | GS
3,5 ugr/cm2 NaCl) or power components, or Raw PCB. Nothing with the solder process or fluxes. Ion Chromatography analysis was necessary to help understanding of contamination origin. When occasionally we run TIC on a NC assembled PBA (Paste ROL0 or
Electronics Forum | Wed Jun 18 07:49:06 EDT 2008 | more_sunshine
hi i'm not experienced in creating pcbs but i have good background, and i have a bunch of questions. i have no access to world wide known pcb chemicals but i managed to get a cramolin positiv spray and i don't know if it is still usable or not? (di
Electronics Forum | Mon Mar 30 11:39:46 EDT 2009 | rgduval
Is this a sample board that you ran without components? If so, I'd get it back to your board house, and ask them to explain to you what's happening. We never did get to a satisfactory root cause on our issue (at least, satisfactory to me). It seem
Electronics Forum | Mon Jun 14 14:09:23 EDT 2010 | jmedernach
Chris, There are a lot of potential causes for voids. I'll list a few below: a.) cleanliness (or lack there of) b.) Via in pad where said vias are not filled c.) reflow profile design d.) incompatible materials My knee jerk reaction would be to che
Electronics Forum | Thu Dec 18 13:07:50 EST 2014 | kevinb
I have worked with Epoxy Technology in the past with silver epoxy. Just to fill you in on what I have been doing with this project in the past. I was using a silver epoxy for my 0201s. I then over molded with an epoxy with a dam and fill. Then th
Electronics Forum | Sat Aug 10 22:23:10 EDT 2019 | halfslice
Hello, I recently had to leave an SMT job because of the fumes generated from a reflow oven. Smoke poured out of the oven and left a tar-like yellow residue on everything near the input and output side. Its been two weeks since I left that job and I
Electronics Forum | Tue Feb 20 13:10:54 EST 2001 | billschreiber
Hello Dave, Before I get into waste management, I must first stress the importance of checking with your local regulating agencies. Every area can be and usually is different. California regulations differ from Ohio and Ohio�s are different than Mu
