Electronics Forum | Tue Nov 08 20:51:41 EST 2005 | davef
Pete, the SF Bay Area gets very muggy this time of the year. Look here http://www.weather.com/weather/local/94110?lswe=94110&lwsa=WeatherLocalUndeclared&from=whatwhere
Electronics Forum | Wed Nov 09 07:46:58 EST 2005 | chunks
Hi Herb, Lexman, try a different paste to eliminate that question mark. Unless you're stuck with Kester, it's worth a couple hours of your time. I know of a couple SMT plants that run 40% to 50% humidity without any problems.
Electronics Forum | Tue Nov 08 16:01:12 EST 2005 | kmakiya
I have called Mydata. I just wanted to see if this is isolated or not. Thanks for the suggestion though. I'm sure your time is very valuable.
Electronics Forum | Tue Nov 22 09:52:57 EST 2005 | moonshine
Might be resin smear. Check out all the stuff on my free site as articles, photos of almost every board defect imagineable plus much more. Did I mention, It's ALL FREE ALL THE TIME? MoonMan
Electronics Forum | Mon Nov 28 20:51:26 EST 2005 | davef
Se�or Tech We use stencils from other suppliers. So, we have no specific problems from Microscreen. Generalizing, most stencil manufacturers recommend that their product not be exposed to temperatures in excess of 110*F (43*C). Our old buddy B S
Electronics Forum | Fri Nov 18 12:29:06 EST 2005 | procimprov
Is the a good, cheap automated way of labeling the trays that PCB's go on? We currently use masking tape with assembly and work order numbers but half the time we can't read the operators handwriting. We have looked into some label printers, but not
Electronics Forum | Thu Dec 01 16:14:45 EST 2005 | chunks
You need to verify if you're getting up to the needed temps. It looks like you're not. I'd say it started to reflow but never reached a long enough time. Nitrogen may help with further wetting.
Electronics Forum | Fri Dec 16 07:43:43 EST 2005 | davef
Rob The typical warming or stabilization time for solder paste is four to six hours. Check with your supplier for specific recommendations.
Electronics Forum | Fri Dec 16 10:25:37 EST 2005 | solderiron
Rather than cleaning a water soluble flux residue off the board, by encapsulating the product. covering the board or the component with lets say a Hysol encasulant. Would this prevent the active flux residue from migrating and deteriorating the elect
Electronics Forum | Mon Dec 19 12:18:41 EST 2005 | Amol Kane
funding from who?. we are dealing with the same thing here. the solder paste cost is roughly 1.5 times SnPb, and the cost of bar solder is thru the roof
