Electronics Forum | Thu Jan 18 19:16:42 EST 2001 | slowe
I am having problems with D-Packs shifting during reflow. Does anyone know of a good aperture design to solve this problem ? Possibly bow tie.
Electronics Forum | Fri Jan 19 06:52:36 EST 2001 | pteerink
We have had the same problem with several boards, and the problem was with the land pattern design on the PCB, not the stencil. We found that the part tends to center itself on the one large pad, and if the two smaller pads are not the right distance
Electronics Forum | Thu Aug 12 10:49:22 EDT 1999 | Ray Hare
I am currently involved with designing a pcb which will use 225 pin bga,s The problem with this design is that the components will dissipate a lot of heat and the design we have come up with is use the middle 6 or 7 rows of balls as the grounding,th
Electronics Forum | Tue Oct 29 08:07:53 EDT 2013 | cyber_wolf
Are there a set of guidelines for optimizing panel design for tabs that will be removed with a board router ? In other words we need to know how to layout the tabs. Thanks
Electronics Forum | Tue Mar 04 08:23:06 EST 2008 | davef
Look here: http://dcchapters.ipc.org/SanDiego/pcbdesignguide1.pdf
Electronics Forum | Mon Mar 03 02:11:35 EST 2008 | andrzej
I am working on instruction for potential customer about PCB design guidelines to make it easy for wave soldering (not selective). I have experience and have already gathered some info but I still need exact information about dimensions and distances
Electronics Forum | Sun Sep 19 10:54:24 EDT 2004 | rohman23
This (along w/ everything else we do) is not high volume. Actually, we're dropping a batch of 7 the first of the week, and that's fairly sizeable for us. I talked with my stencil design folks and sent them a scrap board and all my gerber info. I t
Electronics Forum | Wed Sep 22 08:26:53 EDT 1999 | g cronin
i'm sure everyone has run into this at one point or another. I have a thin pcb .025 that is single up that has to be built on a pallet. does anyone have any tricks to the pallet design that will help to hold these boards down during the screen/ass
Electronics Forum | Mon Sep 20 06:21:05 EDT 2004 | C Lampron
Hi Chris, Acually, it worked pretty good. We made a new blade from SS. We were not sure if it would work so we diddn't want to commit a good sqeegee blade. You will want to try to keep the cutaway toward the center of the blade. And don't hit the fl
Electronics Forum | Tue Nov 26 15:32:41 EST 2013 | boriskilk
As with most questions the answer is; it depends. Provided not too many boards are set onto a panel we use a .10" router gap around the PCB and .10" wide perforated tabs. We do request customers specify where they do not want tabs to ensure no breako
winsouce.jpg)