Electronics Forum | Thu Jun 14 21:48:41 EDT 2012 | kmots15
We work with a lot of larger boards over 24", haven't run into this issue yet. I agree with scott could be your board supplier if they are lower quality, from something as simple as unit conversions in CAD to dealing with different temperatures. A
Electronics Forum | Tue Jan 28 11:02:36 EST 2020 | dontfeedphils
Eh, the stencils have numbers on the labels from the manufacturers and I have yet to put numbered "tick" marks on each shelf, so locating the stencils in this sort of storage solution won't be a problem. I'm surprised you had so many issues with the
Electronics Forum | Tue Nov 16 14:10:30 EST 1999 | Bill Schreiber
According to a paper by Richard Clouthier, published in 1996, there are two major factors about normal cleaning chemistries that may affect stencil adhesives. 1) Elevated temperature above 110 degrees F. (45 degrees C). Stencil adhesives are heat c
Electronics Forum | Tue Nov 25 05:20:20 EST 2014 | grimus
Could be. I am making overprint to achieve proper amount of solder paste inside hole. Now I am trying to reduce maximum overprint and compensate it with step - up stencil. This could reduce effect that some particles of solder paste are not gathering
Electronics Forum | Fri Jan 14 10:11:45 EST 2000 | John Thorup
I'll have to go along with Wolfgang as having a good experiance with frameless. We have been using a system from IIT in California for about a year. I was sceptical at first because of this system's X only tensioning but it does work. We use mostl
Electronics Forum | Wed May 27 10:19:43 EDT 1998 | Jerry
We have no problems but orientation does matter. Orient with longest side of component body perpendicuar to wave. In other words the same preference as with through hole DIPS. Idea is the same as for through hole, that the surface tension will ten
Electronics Forum | Wed May 20 12:01:16 EDT 1998 | Chrys
Have you tried the new Accu-Frame from PNC? It tensions on all four sides using an operator-INdependent mechanical scheme. It seems pretty slick. They're failry new, and don't have a frame for the MPM's last time I checked, so I haven't tried it m
Electronics Forum | Fri May 31 12:50:42 EDT 2013 | spoiltforchoice
Is this a "thermal balance" issue? In the 2nd image you have a group of pads blobbed together as one giant pad. IMHO this is a bad idea, QFN's rely heavily on the magic of your paste and good PCB design to get good alignment. When your solder paste i
Electronics Forum | Wed Dec 18 07:22:23 EST 2013 | davlec
We have not tried VectorGuard, so I cannot comment on that specific solution. However we have been using a Tecan Genesis system for several years and are very pleased with it. Unlike the DEK solution, the tensioning is entirely mechanical so there is
Electronics Forum | Thu Oct 21 21:26:19 EDT 1999 | Dave F
Yims: There's several threads in the archives on re-useable stencil frames, but they seem to be focused on a limited nubmer of suppliers. I'm trying to take a big picture of the suppliers of these frames. So I'd like to know about: 1 ITT ProFrame
