Electronics Forum | Mon Oct 15 13:13:43 EDT 2001 | MikeF
Adding to Dave's comments, suppliers of selective soldering machines include Air Vac and Wenesco. I've used both, to solder and de-solder larger thru hole parts, such as connectors and large IC's. They are best suited to lower volume applications, an
Electronics Forum | Wed Oct 17 19:12:32 EDT 2001 | scott
Dave's right! Wash the boards RIGHT AFTER reflow, don't let that residue harden. Then you turn around and cure that stuff during the second reflow by not performing the first wash???? wow.... By the way, are you having any problems with white resi
Electronics Forum | Thu Oct 18 11:20:21 EDT 2001 | davef
Ooooo, you do have the toys, baybeee!!!! This really is not a good situation. * Leaving this OA flux res on your boards will surely affect the LT performance of your product. * That a rookie found this by noticing solder balls all over the seconda
Electronics Forum | Mon Oct 22 17:37:51 EDT 2001 | davef
I�m aware of no such standard. There may be something in Euroland [ie, IEC, etc.] TM-650 �Test Methods Manual� has procedures for measuring various types of contamination, such as: * 2.2.25 �Detection Of Ionizable Surface Contaminants� * 2.2.27 �Cl
Electronics Forum | Fri Oct 26 07:55:49 EDT 2001 | Kenny
Does anybody know how I work out how heavy a part I can have on the bottom side of the board while reflowing top. Obviously there is a tie between the footprint in the paste and the surface tension of solder paste, but what is it ?
Electronics Forum | Fri Nov 09 13:50:50 EST 2001 | Jim Hammes
Any good advice on techniques to properly coat BGA devices on a PCB? Our preference is to spray the boards but I wonder if the coating will do much good. Thanks Jim
Electronics Forum | Fri Nov 09 16:59:32 EST 2001 | davef
Dunno. What is your goal in coating boards? What material are you using? How thick are you applying this material?
Electronics Forum | Mon Nov 12 16:56:16 EST 2001 | mparker
did you try DRY ERASE markers? ( the ones used for white boards). It's just a thought, I'm not sure if that will work. Doesn't hurt to try.
Electronics Forum | Mon Nov 12 19:44:53 EST 2001 | ianchan
Am abit confused here, so suggestion is not to manual rework solder the 0201, and rather to cut em' out, with the cut shear applied at the end-terminals? elaborate pls? thanks
Electronics Forum | Tue Nov 13 11:50:56 EST 2001 | mparker
Maybe Prof. Whoopee will have to take out the 3 D BB and draw us a picture.
