Electronics Forum | Fri Mar 16 23:38:36 EDT 2007 | mika
I don't understand so please explain in more detail. You say ~0.3mm shifted. In what direction is the paste shifted? is it shifted the very same directions on all panels? Only on this product or even with regular pcb:s? What is the size of the panel
Electronics Forum | Wed Sep 19 11:50:02 EDT 2007 | stepheniii
nevermind misread the post. But if the silkscreen is too thick, can you switch to another PCB manufacturer?
Electronics Forum | Wed Apr 10 22:35:59 EDT 2002 | davef
How do you assure you "have squeegee pressure and speed controlled"? Search the fine SMTnet Archives for background on measuring paste thickness.
Electronics Forum | Mon Dec 16 10:23:42 EST 2002 | Grant Petty
Hi, I have checked the archives, but need some advise. We have a 256 pin 1 mm pitch BGA part of our boards, and we have having problems with paste release our of the holes for the BGA. We just cannot seem to get it right, and we have to keep the st
Electronics Forum | Mon Apr 15 21:27:16 EDT 2002 | djarvis
Everything we do is RF and have had no problems in the last 7 years with - Indium NC-SMQ92J, Sn63 Pb 37, 90.25% Metal, -325+500 mesh. Stencils are always 0.005" thick. However I will qualify that by adding we are an OEM and each new product may requi
Electronics Forum | Thu Aug 19 15:49:05 EDT 2004 | pjc
Hi Erhard, Go to http://www.globalstencil.com They are the stencil firm that worked with MPM for developing technology for printing with thick stencils that are milled out on the bottom to account for existing components on the top side of a PC boa
Electronics Forum | Mon May 24 13:33:46 EDT 1999 | Dave F
| We are running a number of boards with 8-10 25 mil PQFPs on board. Our process is mature with at least 3 years experiance and statistically few opens on the QFPs. Our beloved purchasing department has chased the almighty $ and changed FAB vendor
Electronics Forum | Sun Dec 22 06:00:54 EST 2002 | Mark
Hi: Your stencil specs are good; Did you check the stencil thickness? It would be worth a ck since there may be an error from the stencil mfr If the paste is not releasing with good stencil specs, these are possible causes: 1 The paste isn't tou
Electronics Forum | Fri Apr 16 11:07:53 EDT 1999 | Vic Lau
| | We process both tin/lead plated boards and gold plated boards in our surface mount group. I have used Sn62/Pb36/Ag2 solder paste on all gold plated boards to help prevent gold scavaging. To reduce the amount of different solder pastes we have t
Electronics Forum | Tue Apr 13 09:11:54 EDT 1999 | Dave F
| We process both tin/lead plated boards and gold plated boards in our surface mount group. I have used Sn62/Pb36/Ag2 solder paste on all gold plated boards to help prevent gold scavaging. To reduce the amount of different solder pastes we have to
