Electronics Forum | Mon Apr 05 14:57:59 EDT 1999 | Alvaro Carrillo
Hi, Somebody know how to calculate the size of pads for different IC's: QFP's, SOIC, SOJ, etc. any help is apreciated. thanks AC
Electronics Forum | Tue Apr 06 16:09:25 EDT 1999 | Dave F
| Hi, | Somebody know how to calculate the size of pads for different IC's: QFP's, SOIC, SOJ, etc. | | any help is apreciated. | | thanks | | AC | Al: Justin's comments are well taken. Who should know better about pad sizes that the component m
Electronics Forum | Tue Apr 06 09:42:08 EDT 1999 | Justin Medernach
| Hi, | Somebody know how to calculate the size of pads for different IC's: QFP's, SOIC, SOJ, etc. | | any help is apreciated. | | thanks | | AC | Hi AC, Recommended pad geometries come with component specs. Your circuit will be comprised of giv
Electronics Forum | Fri Jan 17 15:36:23 EST 2003 | davef
How do 0.5 mm pads on the board help paste release from the stencil? Paste release from the stencil is a function of: * Paste * Printer operation * Stencil design You have no obligation to made your stencil apertures the same size as the pads on yo
Electronics Forum | Tue Jun 14 08:37:18 EDT 2005 | jdumont
Morning all, just took a look at a new board we just got in and the there are different pad areas under the same BGA. What happened is engineering uses wider trace sizes for some pads and those overlap when more than one go to the same pad. This caus
Electronics Forum | Sun Jan 19 10:25:54 EST 2003 | davef
You shouldn't freak. You want the pads on both sides of the BGA ball the same so that the torgue from changes in dimension due to different CTE [ie, interposer, solder, bare board, etc.] is balanced on the top and the bottom of the ball. So, the ma
Electronics Forum | Thu Mar 04 12:49:49 EST 1999 | SMTASSY
| Are square pads more difficult to wavesolder than round pads? | I am referring to a through hole board. | Usualy square pads are for indication of pin 1 on a DIP for example. There might be a difference in the capilary affect due to a different su
Electronics Forum | Thu Jun 29 09:46:41 EDT 2000 | sree
Hi Jax, The microbga discussed earlier in the forum is mounted on 16 mils pad whereas mine is on 12 mils pad. Can I use the same aperture opening ?Please advise.
Electronics Forum | Wed Jul 09 10:15:57 EDT 2008 | aj
I have carried out some further measurements on the device and the results are as follow: Component Lead width measures 183 microns. Actuals PAD width measures 158 microns. What I am thinking is that the lead is attracting the solder hence prevent
Electronics Forum | Thu Dec 28 12:19:20 EST 2006 | slthomas
So I'm the only one that's had crappy piles of silkscreen between pads?
