Electronics Forum | Wed Jul 20 13:02:48 EDT 2011 | markhoch
I just asked the same question a few weeks ago. Here's the link to that thread: http://www.smtnet.com/Forums/index.cfm?fuseaction=view_thread&CFApp=1&Thread_ID=15684&mc=3
Electronics Forum | Tue Feb 02 22:57:32 EST 2021 | pnguyvu
Hello Charliem, Contact Steve Yen ( Steve@usastencils.com )at USA STENICLS INC. He'll give you better idea overprint or step . He has solid experience in design smt stencil. We've been receiving very good stencil from Steve.
Electronics Forum | Tue Jan 26 16:29:48 EST 2021 | charliedci
We will be exploring the exciting world of step stencils for the first time and I am looking for any advice from anyone using regularly. This direction is because we have large caps and soldered standoffs along with medium pitch LGA's and QFP's on sa
Electronics Forum | Fri Oct 21 14:13:08 EDT 2005 | mafc65
1.- Clean bottom and top stencil with a cloth/alcohol at same time.Pay special attention to fine pitch locations. 2.- Clean again bottom stencil side .To prevent any residual of solder 3.- Blow air with a air gun under the stencil to remove the solde
Electronics Forum | Fri Feb 05 02:40:40 EST 2021 | victorzubashev
For components with the large pads, you can also use secondary soldering dispensing. Some printers like DEK have an option to mount a syringe with an auger valve to do dispensing after the printing step process. Obviously will not work if you have to
Electronics Forum | Mon Oct 10 17:47:10 EDT 2005 | jhagve
hi We start to make a product which have a 0.4 mm pitch IC and start having problems with not enough solder printed, to solve this problem we had to increase the manual cleaning, now we are cleaning the stencil every 8 printings, before we was runnin
Electronics Forum | Tue Oct 11 10:49:14 EDT 2005 | jhagve
HI We start to make a product which have a 0.4 mm pitch IC and start having problems with not enough solder printed, to solve this problem we had to increase the manual cleaning, now we are cleaning the stencil every 8 printings, before we was runnin
Electronics Forum | Wed Jun 22 18:52:56 EDT 2011 | semiconjt
tTo explain what I mean...sorry for my bad Engilsh... please find short " patchwork stencil" description from EPP Europe. http://www.epp-online.de/europe/-/article/16537487/15944614/Innovators-of-laser-processing-technology /art_co_INSTANCE_0000/max
Electronics Forum | Fri Oct 14 14:09:19 EDT 2005 | bschreiber
Your problem is not the 0.4 pitch. Your problem is the manual cleaning. Manual cleaning will only remove the solder paste from the surface of the stencil. What's more, manual cleaning will force additional contamination into the 0.4 pitch apertures
Electronics Forum | Wed Apr 10 11:45:08 EDT 2002 | mwoodall
We measure the thickness of solder paste printed onto PCBs as a control of the printing process. Generally 6 thou stencils are used and give between 6.2 and 6.8 thou. What thicknesses do other users get? Cheers! Mark
