Electronics Forum | Fri Jan 24 16:54:24 EST 2014 | davef
Yeh, I worked at Wang Computer factory in a reclaimed fabric mill with wooden floors. One of the causes of grapping is flux loss. In their paper, Briggs and Laskey talk about flux loss due to spreading and suggest: * Graping is much less prevalent i
Electronics Forum | Thu Feb 06 11:41:40 EST 2014 | EricW
Years ago I received a sample of adhesive dots that were on tape and reel and could be pick n placed with standard equipment and withstood reflow. I have a current need for these and cannot remember a vendor or manufacturer. Does anyone know of this
Electronics Forum | Mon Aug 18 16:24:31 EDT 2014 | g2garyg2
So I wanted to provide up-dates on this process. I contacted the supplier recommended and they do NOT offer the kapton dots on a single row for automated processes. Just sheets, however I did find that Identco offers an 8 mm round kapton dot in a sin
Electronics Forum | Wed Mar 12 10:04:20 EDT 2014 | globalpowerproducts
We had a SMT specialist come in and go over everything we were doing wrong! We were dipping the boards rather than spraying them, had the pre-heaters set way to low, the conveyor was going too fast, and the actual wave was in the machine the wrong wa
Electronics Forum | Tue Feb 11 14:05:11 EST 2014 | dontfeedphils
I can't speak too much as to why your joints are appearing dull, even with the booster. I can recommend a new chemistry that Kyzen has out that I've been running for about a year now. Price is about the same, it can be run at low(er) concentrations
Electronics Forum | Mon Mar 03 15:44:56 EST 2014 | emeto
with 0.5mm pitch I wouldn't go too fast. Check your separation speed as well as your print area(may be you can drive your squeegees 1-2 inches less). Some pastes like Alpha like very fast separation. so you can win another 2-3 seconds from there.What
Electronics Forum | Tue Mar 25 13:55:05 EDT 2014 | horchak
Ok lets put it this way. If the PCB house used a high quality mask and properly applied it to a properly cleaned surface and properly cured it, then as Dave stated above there are only two things that can destroy it. Excessive heat and overly aggress
Electronics Forum | Wed Mar 19 12:36:04 EDT 2014 | joeherz
We have an application where an assembly has to be residue (flux) free except for 2 SMT non washable parts. Currently those parts are post wash hand adds but the product volume is exploding. We want to run those parts in SMT, mask them using an aut
Electronics Forum | Fri Apr 04 18:16:43 EDT 2014 | garym4569
We are in the process of launching a new product and found reflow solder issue with one of the inductors. I have set oven profile to paste specifications. I just finished profiling with thermocouple under problem component. All other components ex
Electronics Forum | Mon Apr 21 14:43:05 EDT 2014 | emeto
To your first question - Yes you have to take out your paste and leave it on room temperature to warm up(my paste requires 8hours by manufacturer). Second question: If you have controlled room temperature and: If you use jar - up to 5 days your past
