Electronics Forum | Fri May 14 12:30:58 EDT 2010 | padawanlinuxero
Is there a way or process to use the screen printer to put solder paste in the thru holes ? The thing is that we are trying to put a thru hole in the same reflow oven with the other SMD components can some one explain how this work? thanks
Electronics Forum | Fri Jun 25 22:30:47 EDT 2010 | smthexi
i think you need to use a PCB central support. do you know that part ? it specializes in preventing PCB board from bowing during wave soldering.
Electronics Forum | Thu Jul 01 11:48:10 EDT 2010 | mb_mfg
Sid, Try baking the boards before running, to insure no moisture. Baking out the moisture will help prevent warping. Should you need further assistance, we supply fixtures to force the board to stay flat to reduce to thermo shock during wave solde
Electronics Forum | Fri Jun 25 14:49:43 EDT 2010 | patrickbruneel
Just skip the squirt bottle and your problem is solved. Cored solder has enough activity for proper wetting. When occasionally extra activity is needed use a fluxpen.
Electronics Forum | Tue Aug 03 17:13:41 EDT 2010 | bradlanger
Craig, If it is LF Hasl it sounds like it applied too thin exposing the intermetallic layer wich is not solderable. We call out a minimum thickness of 80 microinches and have good results. We have had shops in the past that did not control the Hasl
Electronics Forum | Fri Aug 13 17:45:43 EDT 2010 | bradlanger
Boards with the LF hasl finish applied too thin will genrally pass the IPC test. That is some pretty agressive flux they call out. The boards usually wave solder just fine as well. Reflow is where the you see the problem.
Electronics Forum | Mon Jul 26 20:31:59 EDT 2010 | engr
When hand placing SMT components what is the working time before the solder paste become unusable (dry)?
Electronics Forum | Mon Aug 02 11:45:11 EDT 2010 | domingolebron
Hi all, I need for my company an offline solder paste high measurement equipment for a new project with a new customer. Somebody can help. Many thanks in advance
Electronics Forum | Tue Aug 10 03:42:04 EDT 2010 | aungthura
is it usual if the board has warpage on both sides after wave soldering? And, if it is, please advise me how to solve it. Thanks in advance.
Electronics Forum | Thu Aug 12 21:06:48 EDT 2010 | ptpaazmi
COLD SOLDER LOCATION U600/U601 Problem : Several XMp3i Rotary swithes were found to exibit intermittent function during a DV build at WNC
