Electronics Forum | Fri Oct 19 04:47:19 EDT 2001 | genglish
No, we are not filling the syringes, to be honest the problem is not with the displacement syringes on our conventional method of placing glue, but purely with screen printed adhesive. That's the weird thing. (G)
Electronics Forum | Tue May 14 11:52:04 EDT 2002 | Claude_Couture
Excuse me, but if I remember my physics lessons well, volume is what the water displacement measures, not mass. therefore, if you take the volume of water displaced by your populated PCB, divide it by the thickness of the PCB (which is easy to measur
Electronics Forum | Thu Jan 13 12:53:26 EST 2000 | Mike
Chad, We currently use the PD pump technology, and do not have any problems. I would be glad to discuss some of our process variables with you. Drop me an email with your phone number and I will give you a call. MIKE
Electronics Forum | Thu Dec 16 06:59:43 EST 1999 | Christopher Lampron
Calvin, We have found several reasons for solder beading occurance. We have found that solder balling is usually directly attributed to the reflow profile while solder beading is usually (but not always) a result of either excessive solder paste volu
Electronics Forum | Wed Jan 17 10:14:37 EST 2007 | slthomas
2-3mm would seem close enough to affect the air flow and I was thinking it could be displacing the qfn. However, if you ran a failed board back through reflow and it was functional after that, I'd put my money on insufficient reflow. I suppose it's
Electronics Forum | Mon Oct 11 06:00:27 EDT 1999 | Brian
| Folk's, | | I'm just tying up some loose end's on my Master's Thesis on solderballing @ wave soldering and the effect the topography of the mask / PCB has on it. | I was wanting to do a straw poll on you guy's as to the type of resist's you are us
Electronics Forum | Mon Oct 11 12:24:07 EDT 1999 | John Thorup
| | Folk's, | | | | I'm just tying up some loose end's on my Master's Thesis on solderballing @ wave soldering and the effect the topography of the mask / PCB has on it. | | I was wanting to do a straw poll on you guy's as to the type of resist's yo
Electronics Forum | Mon Oct 11 13:05:51 EDT 1999 | Dave F
| | Folk's, | | | | I'm just tying up some loose end's on my Master's Thesis on solderballing @ wave soldering and the effect the topography of the mask / PCB has on it. | | I was wanting to do a straw poll on you guy's as to the type of resist's yo
Electronics Forum | Sat Apr 24 08:23:03 EDT 1999 | Bubba
| Surprisingly enough, ever since the addition of an omega wave, we solder those often-troublesome SOT23's just fine and dandy.. anyways, long-term, well be getting a universal GDM which uses positive displacement pumps..currently we're using fuji g
Electronics Forum | Mon Dec 13 21:05:34 EST 1999 | Curtis T.
Ken, we always build the bottom side of the board first. That also insures that there isn't any problems with the actives being reflowed and falling off in the glues curing process. By the way we do both paste and glue on the bottom of the boards t
