Electronics Forum | Thu Sep 07 15:24:29 EDT 2000 | Murad Kurwa
Steven, Try http://www.document-center.com/home. You will find various standards for BGAs freely-available but not for free. BTW, I have never seen a BGA underfilled. Only FC and CSPs. The standards available will explain when to.....High CTE delta
Electronics Forum | Fri May 26 15:48:36 EDT 2000 | John Escobar
I am a Ph. D. student in Technology Management at Stevens Institute of Technology, Hoboken NJ. My thesis idea is related to Economics for Electronic Assembly. The general idea is to create a sensitivity economic model related to the design and manufa
Electronics Forum | Tue May 16 13:55:12 EDT 2000 | Boca
John's right, Stevens makes a good product which lasts quite a while, they have many variations of products to choose from also. Another supplier is Dynamic Technologies, they make a titanium cover with a silicone compound jacket, pricey but they wo
Electronics Forum | Thu Jul 05 10:45:01 EDT 2001 | dougie
Steven, There is a load of info on this if you check through the archives. Quick pointer though are: Solder balls are caused by paste creeping under the component at placement. The part is placed and the paste is squashed under the component, when t
Electronics Forum | Fri Aug 16 10:58:36 EDT 2002 | kenbliss
Hi Steven www.smta.org, http://www.ipc.org are two industry association sites that have lots of information and technical papers. As far as efficiencies try http://www.blissindustries.com click on Bliss University, there is a lot of unbiased
Electronics Forum | Wed Feb 18 16:38:47 EST 2004 | agp
Dean,Chris,Steven, Thanks for all your inputs. I have met with our smt staff and scheduled an evaluation by early next week based on your suggestions. I'll be happy to relay positive feedback afterwards. To be more detailed, here are our set-ups as
Electronics Forum | Tue Apr 27 14:14:10 EDT 2004 | finepitch
Steven, While agreeing with your method here, I also would like to ask a question since we're right on that subject. Have you ever experienced problems with IR heating while working with a Heat-Slug BGA, or a Viper BGA where the whole top is covere
Electronics Forum | Thu Oct 14 07:45:56 EDT 2004 | Steven
Hi, It is nice with a flexible machine. But what is the cost? It sounds so nice when you see a demonstration or the alike. What I have heard about the NXT model is that if the boards becomes wider than 210mm or so, the performens drops whit about 5
Electronics Forum | Thu Dec 20 12:05:46 EST 2007 | realchunks
Not you Steven. Blanket comments like "Double pass printing for solder paste is not needed and will cause defects. Redesign your stencil thickness or aperture sizes, change your paste mesh size or type, go to 45 degree blades." are so way off base.
Electronics Forum | Thu Jun 19 09:33:09 EDT 2008 | stevenvl
Hi, I'm having issues with boards sticking/jamming along the line, as well as what seems to be excessive wear along the guide rails. The boards are an Alumina Ceramic material and the rails differ by machine, but include anodized aluminum, steel, de
