Electronics Forum | Fri Apr 30 07:44:05 EDT 2010 | jdengler
The order of the posts are still getting mixed up at times. See SMT transformer misalignment post. Jerry
Electronics Forum | Mon Jun 04 09:20:38 EDT 2018 | dekhead
>> mis-alignment?
Electronics Forum | Wed Dec 26 00:28:22 EST 2018 | premkumar_haribabu
Hi, Can some one reply for my query please ?? Thanks Prem
Electronics Forum | Tue May 22 00:01:43 EDT 2001 | philipreyes
Hi to all!! For those who have current process of Placing BGA package (SMT using BGA package), do you have any idea what is the acceptable misalignment of the balls on the pads of PCB? I have here with me the IPC 7095 BGA Assembly and Design but
Electronics Forum | Sun Aug 02 20:31:22 EDT 1998 | karlin
Hi Bob, The weight of the TBGA is heavier then PBGA due to the Stainless steel heat sink. I have tried run them through the oven without paste. Due to the high lead content( 90Pb/Sn10), the "solder: did not melt. Still see the misalignment issue but
Electronics Forum | Fri Mar 21 09:08:53 EST 2003 | mantis
Hi all, I have a strange problem,while building a large 15x15inch 3.5mm thick Pcb.During topside reflow i am experiencing some misaligned parts and even bridging on a bga that are sitting very close to a D size tantalum cap.The strange thing is that
Electronics Forum | Thu Mar 27 11:39:27 EST 2003 | kenlchin
Hi,mantis, I has experienced this case.when we run a model ,misalignment and tombstone of some 0805 resistors and 1206 caps always occured.we have taken many actions,such as adjusting reflow parameter&printing parameter,checking pcb and parts soldera
Electronics Forum | Wed Apr 29 17:43:14 EDT 2009 | smt_guy
I have a Product with 2 Different PCB Fiducial allocation in the Design. It has 4 Fine Pitch components. The first PCB DO NOT have Fiducial Mark on the board itself BUT has Fiducial on the Break-OFF Tabs. The second PCB has no Break-Off Tab but has f
Electronics Forum | Tue Nov 14 03:00:14 EST 2000 | sarry
I have one suggestion why don't you align all parts and take a close look at it if you can find any misaligned component after that. IF SO, that's machine's repeatibility problem.(or mechenical problem-dirty nozzle, wrong pick up and placement height
Electronics Forum | Sun Aug 02 12:24:23 EDT 1998 | Bob Willis
Sorry all the parts I have processed are just like standard BGA just swing back into possition unless they are placed off the pads and touching the next pads. All my parts have had heat sinks and are the same weight as PBGA. Are your parts light. If
