Electronics Forum | Thu Apr 29 10:49:05 EDT 2004 | pjc
Yes, using an illuminated magnifing glass helps. How well your board fixuring is on the table will effect print alignment on other boards loaded. 0.5mm & 0.4mm will require very good fixuring, like you can get with tooling pins if the board has non-p
Electronics Forum | Tue Jun 01 06:13:11 EDT 2004 | abraham
We have been populating lot of BGA boards and for all these boards we have been using No clean solderpaste. We are under the impression that aqueous cleaning is not recommended for BGA boards as the residue cannot be cleaned properly. However we are
Electronics Forum | Tue Jul 19 12:29:20 EDT 2005 | cyber_wolf
How does the mount plane change if the surface of the board is located in the same place every time ? For example: If you put 2 boards side by side on the Y wagon : one board measures .020" and the other .200" the surfaces of the boards are going
Electronics Forum | Fri Aug 25 07:53:12 EDT 2006 | Hussman
Board House, One last question. Could the above changes make the board more ridid? My concern is we insert Pem nuts via a press. Nothing has changed in this process except the board house. Now when ever we insert these Pem nuts the board cracks.
Electronics Forum | Wed Dec 06 22:35:05 EST 2006 | davef
Questions are: * When you say, "corner of some board's BGA chips", is it on the top of the package or between the board and the bottom of the package? * If between the board and the bottom of the package, does it span the distance between the board a
Electronics Forum | Mon Mar 19 19:21:43 EDT 2007 | davef
We picture that the 'ridges' are partitions that run parallel in the box and are spaced wide enough to: * Hold the boards vertical by sliding them into the ridges * Prevent the boards from bumping together Can you rearrange these partitions to form
Electronics Forum | Mon Jul 30 10:22:57 EDT 2007 | swag
Sounds like your board stop sensor is not working properly so it's not seeing the y-stop/board edge when the board enters the center or the machine. You could try taking the camera cube cover off, jog the camera over a board then move the board back
Electronics Forum | Mon Jun 16 12:06:52 EDT 2008 | realchunks
Seen this with our old board house. The uncured board is causing your problem. Hard to catch, but looks like you have all your ducks in a row. We presented the exact same thing to our board house, and naturally they blamed our process, handling, a
Electronics Forum | Wed May 23 17:06:29 EDT 2012 | davef
If you don't submerge the board, how do measure the level of contaminants on that portion of the board that is not submerged? I suppose that you could only submerge a portion of the board and guess that portion represents the whole board. Of course
Electronics Forum | Wed Jun 13 16:51:26 EDT 2012 | davef
Sorry, but I don't have a quick and easy answer. Before jumping the 'black pad shark,' tell us more about your boards ... * Is the gold still on the pads after soldering? * Can you make the pads take solder using a soldering iron? * Does this happen
