Electronics Forum | Thu Oct 12 16:36:15 EDT 2000 | John Thorup
Try these: APS has two. seemingly not shown on website but in Contact East catalog www.apsgold.com/www.contacteast.com Manncorp has one by Esemtec www.manncorpdirect.com OK Industries division of Metcal used to make them. I'm not sure if they still
Electronics Forum | Fri Oct 20 13:57:35 EDT 2000 | Greg Amero
Most LCD manuf. specify not to wave or reflow. I believe this is because of the prolonged exposure to the preheat temp. However, about three years ago, we were running about 350/wk of a 40P DIP LCD through the wave with no fallout. It did stress t
Electronics Forum | Wed Oct 11 16:05:16 EDT 2000 | NLykus
Does anyone have any experience with running a double sided/surface mount(bottom)board manufactured with CHEM 1 material? We are currently looking at cost cuts. My personal experience recently in running a D.O.E. against other materials and solder
Electronics Forum | Mon Oct 16 11:12:42 EDT 2000 | NLykus
CEM 1 is a laminate base board material. The other boards in the experiment were manufactured using FR4 as the base board material. What I'm leaning towards is that the glass transition temperature "Tg". What do you think? Topside temperatures in
Electronics Forum | Mon Oct 16 20:45:45 EDT 2000 | Dave F
Thanks Nance. So, your production process is: * Screen / dispense glue on secondary side * Place secondary side SMT components * Cure glue * Insert primary side PTH components * Wave secondary side Please tell us about: * Flux type and wave s
Electronics Forum | Wed Oct 11 09:55:10 EDT 2000 | Ian Harrison
Some boards that are populated by one of our subcontractors are getting a white powdery residue forming on them. I think it is the non clean flux and process which they are using that is causing the problem. Their process is as follows. Flux is put i
Electronics Forum | Tue Oct 10 05:50:01 EDT 2000 | Wolfgang Busko
Did I miss something, is there a competition, a championship out there? World class with a bicycle or a racing car ? And still there�s the question, what�s the measure ? Stock quotes, workers, products, customers, nature ? It wouldn�t be "world cla
Electronics Forum | Mon Oct 09 20:30:53 EDT 2000 | Dave F
Good story. Bad idea. You need standards. You need training in those standards. Call IPC to get both. You're wasting time and money with this cockamamey scheme to outsource your inspection standard making. And who says the bozo or bozette tha
Electronics Forum | Sun Oct 08 00:18:05 EDT 2000 | Arturo
We are working with a 16mil TSOP Land width=0.2mm(8mil) and use: 1.Type 4 particle size solder paste. 2.Laser cut electropolished stencil: Aperture width=0.19mm (we tried lower than this but had solder insufficiency). Thickness=0.005"(130 microns)
Electronics Forum | Fri Oct 06 10:19:21 EDT 2000 | JAX
Head, There are no rules on what is placed by machine. Some things to look at: 1. vision alignment issues a. board size ( FOV ) 2. Machine pick-up a. special nozzle b. off center pick-up (depending on machine this could cause a problem) 3. Re
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