Electronics Forum | Fri Sep 08 00:24:35 EDT 2000 | Jim Arnold
Sudden flux boil will cause splatter. More thorough drying or a slower intial ramp to allow drying to occur before a boil or "splatter" temperature is reached may aid your problem.
Electronics Forum | Thu Apr 13 21:02:37 EDT 2000 | Mario Carluccio
Can anyone advise me what are the types of contaminants which can be present on a printed circuit board at the very beginning of a SMT line. Of these contaminants, are any of them detrimental to the SMT process (i.e. label application, or solder pas
Electronics Forum | Tue Apr 11 16:11:09 EDT 2000 | Lawrence A. Groves
MPM has a pretty good paper- http://www.speedlinetechnologies.com/document.php3?A=1364&B= this might help
Electronics Forum | Sat Apr 08 09:32:51 EDT 2000 | Matt
Make sure your screen aperture size is about 80%, and you should not have a problem. Some pastes require a hump profile, to get rid of balls.
Electronics Forum | Mon Feb 19 13:21:01 EST 2001 | billschreiber
Thank you for giving me an easy one. Cleaning populated PCBs in a stencil cleaner can be a nightmare! Please see my response to the question by MartyS on "Fine-pitch Apertures". If this doesn't answer your question, let me know.
Electronics Forum | Wed Feb 21 09:55:45 EST 2001 | ramigary
Hi! We are a low production contract manufacturer company, We have few stencils and low productions, but we have a lot of problems with misprintered pcbs, my question is �is there some machine to clean only pcbs?� Excuse my english.. Ram�n I
Electronics Forum | Tue Apr 24 10:37:45 EDT 2001 | caldon
A small SMT line? I have conections for a New screen printer (MPM), Essemtec Placement machine, and Reflow oven (Electrovert) for $100K Let me know how interested you are. Caldon W. Driscoll ACI USA 610-362-1200 cdriscoll@aciusa.org
Electronics Forum | Thu Oct 26 14:51:46 EDT 2000 | eramirez
Currently I am running a very dense PCBA using a PCB less than 20 mils thick. We have two facilities running this product. One is using Nitrogen during reflow one is not. What is the advantage and disadvantages of using Nitrogen during the reflow
Electronics Forum | Mon May 14 17:10:34 EDT 2001 | davef
It's pretty straight forward: Cartridges require a bigger inventory investment and a dispensor, but improve paste handling and mixing.
Electronics Forum | Mon Jul 23 11:26:21 EDT 2001 | Malcolm Jussawalla
Hello, I am new to SMT and I was wondering if someone could give a breif overview of a generic SMT process. Basically what machines are needed and how chips are mounted. More specifically, how the solder is applied. Thank you
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