Electronics Forum | Tue Mar 08 19:37:17 EST 2011 | Jacki
Hi We did some evaluation to solder 0.4mm pitch by Wave. We found that there were many solder shorts at Sockets pins so it made touch up time longer. Please advise me someone has achieved the fine pitch soldering by wave. Thanks in advance.
Electronics Forum | Thu Mar 29 15:50:35 EST 2001 | tomgervascio
We've think that with seen solder shorts under BGAs after wave soldering the boards. In addition, it seems to be related to a certain soldermask configuration over the topside BGA vias.. THere is one vendor,A, that is applying soldermask after HASL,
Electronics Forum | Fri Sep 19 15:51:01 EDT 2003 | David Bonilla
Hi I am having solder short defects on the bottom side with SMD devices that run through the Wave solder. May you let me know any IPC guildelines about the spacing, orientation or any other design guidelines for avoid solder defects with SMD device
Electronics Forum | Thu Apr 14 09:21:52 EDT 2005 | pr
What kind of wave are you using? Is this an old job and a new problem? Sounds like dross shorting to me, Make sure the wave is flowing over the back plate (at least when the board hits it). good luck, pr
Electronics Forum | Fri Jul 04 21:09:04 EDT 2003 | ramanandkini
I have a CEM-1 PCB board with 35 microns copper. This is PCB is finished with SMOBC+HALS. We do solder SMT LEDs, but till date we do not have problems that you have listed. The LEDs are good & bright. It even passed high & low temp cycle tests (-40 t
Electronics Forum | Tue Sep 23 09:18:45 EDT 2003 | russ
IPC SM 782 has some info on wave solder pad geometries. We usually like .03" spacing to any uncommon conductors. I would assume that you are seeing shorts between components and vias or adjacent parts? Russ
Electronics Forum | Tue Sep 21 08:43:28 EDT 1999 | Christopher Cross
We are finding solder shorts under 1206 Components on the bottom side of our boards.In all cases these shorts are from either side of the component to a feed-thru under the component body. Adhesive is used to glue down the component and then the boar
Electronics Forum | Sat Oct 28 10:13:27 EDT 2000 | KF Lok
1) Try to keep lead as short as possible. 2) The long side of the connector in the direction of conveyor. 3) Use pallet, design such that the connector is 45 degree to the wave.( or conveyor). May not remove all shorts but reduce to one area i.e. th
Electronics Forum | Mon Jul 13 03:00:29 EDT 1998 | Bob Willis
Very good point. I will be linking back to the page shortly when the my 30 training videos, 15 CD ROMs are featured on the book store page. This will be happening shortly as its an administration thing. Thanks for the input there will be a wave solde
Electronics Forum | Mon Feb 28 23:07:04 EST 2011 | kemasta
It is random. By the way, this board pass thought wave process, (BGA is at the top), will that cause the older short issue?
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