Electronics Forum | Sun May 28 08:24:50 EDT 2006 | Sjm
I read about 10:1 , 6:1 aspect ratio but I don't understand how it works. Can someone explain how you figure out the aspect ratio on a design with a board thickness of .093 and via hole size of .010 I don't know how to get the 6:1 number Is it the b
Electronics Forum | Fri Jul 11 15:23:25 EDT 2003 | John
do you mind sending me the excel file also? 4699j@hotpop.com
Electronics Forum | Wed Jul 16 21:08:25 EDT 2003 | hamos_wks
pls send me a copy too. thks! kietsiongwong@pg.slr.com
Electronics Forum | Fri Jul 17 09:28:27 EDT 2015 | davef
8 Best davef
Electronics Forum | Mon Jul 20 11:39:20 EDT 2015 | migliore
Hi davef, thank you for your answer. Enrico Migliore
Electronics Forum | Mon Jul 30 18:52:43 EDT 2001 | Brian W.
You did not provide the stencil thickness or your aspect ratio. If your aspect ratio (Aperture width/stencil thickness) is less than 1.5, the paste will not release correctly from the aperture, leaving paste in the aperture. For example, if your pa
Electronics Forum | Fri Apr 05 12:09:51 EST 2002 | davef
Conductive Silver Epoxy Holefill Process Dupont CB100 (Note: Dupont Recommendations) * Board Thickness: 0.008" to 0.085" * Drilled Via Size: 0.008" to 0.018" * Aspect Ratio: 1:1 to 6:1 On learning more, try: * http://www.ipc.org/html/S17-4a.pdf * Du
Electronics Forum | Mon Jun 25 20:37:14 EDT 2001 | davef
You are 100% correctamundo that the pad on PCB should be the same as the pad on the BGA interposer, but let�s not expend that thinking to the aperture of your solder paste stencil, right away. Generally, paste on large pitch BGA is often 1:1, but as
Electronics Forum | Wed May 22 12:32:49 EDT 2002 | pwrgroup
which stencil vendor can deliver aspect ratio and area ratio and the statistical information to the user?It's difficult if the pad is modified.
Electronics Forum | Mon Jun 30 19:52:39 EDT 2003 | Mark Coplan
If you would email me your aperature ratio on the excell spreadsheet I would be most grateful Thanks, Mark
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