Electronics Forum | Thu May 06 19:21:24 EDT 2021 | markhoch
Verify your aperture reductions in the stencil. Are the solderballs always in the same location? Same size & shape? Is the solder leaching through plated thermal holes from the opposite side of the PCB? Are you using stencil apertures designed to min
Electronics Forum | Fri Nov 03 21:16:40 EDT 2023 | calebcsmt
Depending on the assemblies you're producing, I highly recommend 8.9HF from Indium for a low residue SAC305 alloy. We have been using this for years in our NC process and residues are very little, with appropriate stencil apertures and paste printing
Electronics Forum | Tue Aug 06 12:06:39 EDT 2002 | carln
Hello Joseph, How are you cleaning your Pump Print plastic stencils? Regards, CN
Electronics Forum | Thu Mar 22 08:07:41 EST 2001 | CAL
Selective Laser Soldering? Beamworks and Speedline Electrovert Both demo'd units at APEX. I am partial to the Beamwork machine cause it was able to do BGAs. Are the QFPs acceptable? You mention cleaning the pads, Stencil aperture enlargement could t
Electronics Forum | Mon Sep 19 08:36:53 EDT 2005 | lloyd
I had a similar problem a few years ago when glue printing. Our production environment wasn't to clean room standards and there was a bit of air born contamination floating around which would gather on the PCB surface (also our rough board edges wou
Electronics Forum | Fri Jul 17 11:49:58 EDT 1998 | Justin Medernach
| My question is in regards to how exactly temperature and humidity affect the stencil printing process. If temperatures here at the plant in the summer are 70-73 degrees F. and relative humidity is 60-65%,to what extent will the results of the ste
Electronics Forum | Tue Jul 19 09:18:14 EDT 2011 | davef
Could this be an opportunity to explore the use of cartridge-type paste dispensers? Or maybe a reason to keep working over the weekend. * Re-Storing & Re-Using “Used” Solder Paste. Though not a recommended practice, used solder paste from the stenci
Electronics Forum | Wed Mar 21 20:40:28 EST 2001 | dblsixes
We are building a monster ... Dimensions are 10" x 7" ... 12 layers ... A Logic Assembly with a Power Supply all rolled into one ... The Power Supply is in one section of the board, the logic in the other section ... The Power Supply obviously has a
Electronics Forum | Tue Nov 02 08:36:51 EDT 2010 | rgduval
Michelle, Our experience with no-clean solder pastes has been that water washing a mis-print is a bad idea. We've found that DI water does not do a sufficient job removing the no-clean paste (the same goes for stencils). Instead, we have washed no
Electronics Forum | Fri Mar 02 12:23:57 EST 2001 | kerryn
I recommend that you checkout the OnBoard Forum on Stencil Cleaning. You have to enter it via the SMTnet Home Page. I tried going through the OnBoard Forum link and could not see the data. Must be a software glitch. However, there is more informatio
COT specializes in high quality SMT nozzles and consumables for pick and place machines. We provide special engineering design service of custom nozzles for those unique and odd components.
2481 Hilton Drive
Gainesville, GA USA
Phone: (770) 538-0411
