Electronics Forum | Fri Nov 11 11:02:23 EST 2005 | russ
i would look at an SPM from MPM(speedline) or an SP200 from Europlacer (speedprint not speedline) We have used both of these machines with great success from 16mil pitch qfps to .5mm pitch uBGAs.
Electronics Forum | Tue Dec 06 06:14:38 EST 2005 | bwet
Try using some of those new polyimide stencils. They are 8mils thick and can prevent shorting if it is due to solder mask problems or too much paste. http://www.solder.net/technical/tips.asp BWET
Electronics Forum | Sat Dec 10 07:03:59 EST 2005 | mdemos1
Hi. I am trying to find out the minimum copper thickness I should see on a through hole barrel. The board has 1 ounce copper and the board thickness is 0.062". I am finding thicknesses of 0.6 to 1.2 mils. Thanks, Mike.
Electronics Forum | Thu Dec 22 15:17:06 EST 2005 | jdumont
How is everyone coating under these connectors? Is RTV covering the outside so nothing can get in an answer? Or very thin silicone to wick under... http://img302.imageshack.us/img302/1728/dscn24450ac.jpg
Electronics Forum | Mon Jan 16 09:05:15 EST 2006 | adlsmt
We have had an MPM SPM for 5 years that we bought used. It works like a champ, we do down to 19mil pitch with it.
Electronics Forum | Mon Jan 16 09:18:08 EST 2006 | russ
We are using our SPM to .012" pitch with excellent results. It has the manual vision. (two cameras with user defined outlines used with mylar alignment) EDIT - I meant 16mil pitch, not 12!
Electronics Forum | Wed Feb 22 08:02:56 EST 2006 | dj44
I was looking for an stencil design for a 0.5mm pitch uBGA. Pad size is 0.38mm in diameter. We have been using 5mil stencil with type 3 no clean paste. What size aperture should we be using? Any suggestions?
Electronics Forum | Thu Feb 23 23:24:14 EST 2006 | KEN
Depends what is adjacent to the step. 1206 chips could reside closer than say a 16 mil fine pitch. Larger apertures are more forgiving to height variations than small apertures.
Electronics Forum | Mon Mar 13 12:53:21 EST 2006 | slthomas
"Surely this is a job for Wavemaster Larry?" I know this is supposed to be a serious forum, but that's some funny stuff! 8 mil stencils. Suuuuure.
Electronics Forum | Mon Mar 13 17:04:19 EST 2006 | slthomas
Wow. I'm always just happy to get 100 mils/10 inches from a bare board, let alone
