Electronics Forum | Thu Mar 02 20:58:16 EST 2006 | pr
Dis agree?!?!?! We solder plenty of them o6o3s at honda and they l00k 0k! Solder balls will always fall off the b0ard when mounted anyway.
Electronics Forum | Mon Mar 13 04:18:42 EST 2006 | pedestrian
0.2mm gap between parts is small and easy to solder short. I prefer 5mils or 4mils.
Electronics Forum | Fri Mar 03 12:53:59 EST 2006 | Gary
Try Mini Micro Stencil. They have been doing it longer than anyone out there with the best reputation for quality and turnaound time. Contact David at 760-591-3804. You will not be disapointed.
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 | Thu Mar 09 04:04:48 EST 2006 | dougs
one point to remember is to have a large stencil reduction on the thermal pad, you need to reduce the solder volume by about 35%, if you don't you risk the solder from the thermal pad shorting out the other leads or the solder volume causing the comp
Electronics Forum | Fri Mar 24 14:06:07 EST 2006 | mdemos1
Hi. We are designing in a 128 pin LQFP that has a heat sink in the center of the package. The size of this is 7.44 by 7.55 mm. Can anyone recommend what pad size should be on the board for this? How about stencil aperture/pattern? Thanks, Mike.
Electronics Forum | Mon Mar 27 22:20:04 EST 2006 | davef
Mike The air 'contained' in the aperture would prefer to escape between the board and the bottom of the stencil rather than through your paste while you're printing over it.
Electronics Forum | Thu Mar 30 07:44:19 EST 2006 | Chunks
UP 2000 is a good printer. Spares are normal - blades, stencil/board light bulbs, the over head flourecent, get new conveyor belts. Take the cover off the tactile sensor and make sure it's clean also. Other than that it should be a work horse.
Electronics Forum | Mon Apr 03 07:46:21 EDT 2006 | cyber_wolf
I have a pad layout that has .010" dia. with .010" spacing. Going to use a .004" foil. I know I need to over print them, but how much without causing bridging issues ? Thanks, Sr.
Electronics Forum | Tue Apr 04 14:00:48 EDT 2006 | russ
I have used a .013" square under these conditions. Limited run but all were good. 72 qty in 1 batch run
