Electronics Forum | Tue Aug 24 10:58:26 EDT 1999 | James Graves
Does anyone have any information on stencil aperture/pad ratios for noclean solder paste. In the past I have experienced severe solder ball problems when using the same size apertures from aqueous products as I do with the No-clean products. Conseq
Electronics Forum | Wed Aug 25 21:51:13 EDT 1999 | Jason Tomlinson
| Does anyone have any information on stencil aperture/pad ratios for noclean solder paste. In the past I have experienced severe solder ball problems when using the same size apertures from aqueous products as I do with the No-clean products. Cons
Electronics Forum | Fri Apr 11 01:52:26 EDT 2008 | andrzej
0,66 Is it ok ? Is it overprinted r - radius of stencil aperture - 9mils ~ 230um t - stencil thickness - 150um Other data : diameter of soldermas - 26mils Diameter of pad - 18mils Diameter of stencil apertre - 18mils Pitch - 0,8mm ~ 31mils What s
Electronics Forum | Fri Dec 10 09:47:52 EST 1999 | Larry
What does everyone use for stencil apertures on D Paks? What's the best way to keep them from floating during reflow?
Electronics Forum | Fri Feb 24 06:42:08 EST 2006 | SIR
What is the IPC norm wich drives the IPC stencil aperture design? The contest is: a stencil for the deposition of solder pastes on bare boards Thanks
Electronics Forum | Tue Feb 28 07:47:33 EST 2006 | davef
The key driver to aperture design is to assure a fillet of the proper height for the component temination and the reliability of the end-product customer use environment.
Electronics Forum | Wed Aug 25 19:44:35 EDT 1999 | Dave F
| Does anyone have any information on stencil aperture/pad ratios for noclean solder paste. In the past I have experienced severe solder ball problems when using the same size apertures from aqueous products as I do with the No-clean products. Cons
Electronics Forum | Fri Apr 11 06:22:04 EDT 2008 | andrzej
Hi Andrzej, > > We are using for BGA (0.8 pitch) > square apertures size 0.4 mm (rounded corners r = > t) and stencil thickness t=5 mils. So area > ration-_ w/4t=0.8 > > Regards Jan Hello Jan, I understand that you have the same pad dimensio
Electronics Forum | Fri Apr 11 05:51:20 EDT 2008 | janz
w/4t=0.8 Regards Jan
Electronics Forum | Wed Apr 16 02:46:55 EDT 2008 | andrzej
Thanks Jan for hints
