Electronics Forum | Mon Jul 16 16:42:40 EDT 2007 | pnguyvu
Hi Jacky, It seems you have solder bead problem, beading occurs when the solder paste brick splatter as a component is placed into it, after reflow, the splatter becomes a spherical solder ball. Hope this will help. Steve USA STENCILS
Electronics Forum | Fri Jul 20 16:39:18 EDT 2007 | john_smith
Jacky, we have had a similar problem. We needed to go to a smaller nozzle and also check your vacuume system and air kiss.Could be after placement when the machine blows air to insure the part is off the nozzle that it is effecting the solder brick.
Electronics Forum | Mon Jul 16 10:44:29 EDT 2007 | Jacky
Hi All, Recently, we encountered strange defect at our SMT line. We can see solder ball spatter around at one of the component pad. This lead to insufficient solder defect at 1 side of the component. The other side of the component look good(Meet
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 | 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 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 | Wed Mar 14 07:30:14 EDT 2007 | davef
So, you toss whatever is on the stencil every 8 hours. Correct? How long has it been on the stencil? * If that particular paste has been on the stencil for 8 hours, we'd agree to toss it too. * If paste has been on the stencil for less than 8 hour
Electronics Forum | Thu Sep 07 10:03:30 EDT 2000 | KS Wong
Hello, I am looking for input on the 7 zone convectional reflow oven on the temperature profiling. I having a problem with the flux/solder spattering on the Au cotact fingers. I have ran some experiment with the soak time and reflow time. Anyway,
Electronics Forum | Mon Jun 13 10:28:29 EDT 2005 | andymackie
I've had a lot of experience with solder spatter. It's usually related to moisture (humidity) uptake by the paste, or outgassing from plating: particularly Au/Ni. Solder spatter from the plating will change from board-vendor to board-vendor. I shoul
Electronics Forum | Tue Jul 18 03:04:46 EDT 2006 | sharifudin
We are trying to reduce the number of unit fail at QA Visual Inspection due to Solder On Gold Finger. We know so far that the solder is spattering onto the Gold Finger during reflow. I need some advise on what kind of process can improve to reduce th
