Electronics Forum | Tue Apr 26 16:00:08 EDT 2005 | jdumont
Good day all, we are having problems with some new BGAs that are slowly filtering their way into our designs. Engineering really wants to use them and I am pressured to make them work. They are 54 ball BGAs. The pitch is .8 mils and the ball diameter
Electronics Forum | Wed Apr 27 10:52:52 EDT 2005 | saragorcos
Have you examined what type of residue is present? It is possible that what you are seeing is benign, though flux that is not fully activated often leaves harmful residue species such as chloride or weak organic acids. If you don't want to change p
Electronics Forum | Fri Apr 29 08:39:01 EDT 2005 | davef
Few solder paste suppliers recommend freezing solder paste. Check with your supplier for recommendations. Examples are: * In many cases, nothing happens. However, some pastes are susceptible to damage that impairs paste performance. As a consequenc
Electronics Forum | Wed May 04 10:27:33 EDT 2005 | nice90
Or you can use the Hot Air (Hakko) to remove that component and a tweezer to pull it. dont pull it just yet. If you see the solder melting then feel the component using the tweezer by wiggling it a bit and if you can wiggle it only then you can pull
Electronics Forum | Mon May 09 10:52:29 EDT 2005 | patrickbruneel
Hannu, First and for all I have a problem with your question "tried and trusted" for the simple reason that you are going to change too lead-free. Ultrasonic soldering or welding is not new, as far as I know it is only used applying the ultrasonic
Electronics Forum | Thu May 12 11:02:48 EDT 2005 | deyo
I've looked at a lot of AOI's in the past couple years. First and formost KEEP IT SIMPLE! Second clamp the boards down this will aid in keeping the camera feild of veiw stable, most that I've looked at this was an option not a stock feature. Also sid
Electronics Forum | Wed May 11 11:36:43 EDT 2005 | rlackey
Hi Peter, There is no Silver in it, which even in small quantities (0.3%-4%) improves solderability. I would try and see a demo on a similar machine to yours with a similar product as everyone can get their solder to look great in lab/showroom site
Electronics Forum | Wed Jun 22 19:43:14 EDT 2005 | BTaylor
I agree with steve. With so many vendors advertising to be the best, it is critical to have a "real time" demonstration on your product. Take a few good boards and a few defect boards along with the necessary data to the demo. Don't allow any prog
Electronics Forum | Wed May 25 19:47:01 EDT 2005 | russ
It wouldn't be that many placements (billions) since we are a low volume high mix shop but we have placed 100s of thousands with the N08 for sure. We use the N045 by far the most since we seem to be an 0603 and smaller type shop (probably into the m
Electronics Forum | Sat May 28 06:40:24 EDT 2005 | steve
Aim offers excellent soldering fluxes. That said your probably dealing with the local representative. The FIRST question to ask when evaluating any chemistry is "What is the Availability of the flux". Distributors don't necessarily stock all of a man
