Electronics Forum | Mon Dec 31 03:51:14 EST 2001 | hany_khoga
Dear all: We had a severe curvature in our boards after wave soldering.Could a second pass in the wavesolder m/c reduce this curvature. If not then what do you recommend to solve this problem. Also how it can be avoided. Best Regards Hany
Electronics Forum | Fri Jun 14 16:51:28 EDT 2002 | nuezmaster
Thanks for all the advise. I was able to recruit one person for a week to inspect boards after pick and place and was able to show a 65% efficiency increase for that line. Now I have a req. for 5 more people. Thanks, Nuez
Electronics Forum | Tue Mar 30 22:30:06 EST 2004 | davef
Tony First, drying at 125*C for an hour is not going to do much drying. Heck, those boards are barely warm to the touch. Second, tell us about: * Pitch of your uBGA * Solder paste flux * Cleaning process and agents
Electronics Forum | Tue May 11 10:43:37 EDT 2004 | Melissa
Has anyone experienced problems lately with excess flux residue left on the board after reflow when using Alpha UP78 OSP paste? We are getting a component failure that the designers are blaming on too much residue. Thanks
Electronics Forum | Tue Jun 21 21:54:34 EDT 2005 | Zeta
PCB BOARD - After removal of the BGA from the PCBA. In the midst of removal of the solder at the PCB, the green mask was scratched. If we do not repair the green mask, the whole board will have to be scrapped. Which repair kit do you recommend. W
Electronics Forum | Tue Aug 02 21:37:21 EDT 2005 | davef
Are we talking: * BGA that you've reballed and want to clean prior to attachment to a circuit board? * BGA that you've attached to a circuit board after correcting something or other? ... and we're talking a water soluble flux or what?
Electronics Forum | Thu Nov 17 13:13:49 EST 2005 | Mike
Hello, Some questions.... Are you running lead free? What alloy? What�s your pot temp at? Temp of the board after preheat? Are you getting any solder in the barrels (
Electronics Forum | Mon Apr 02 12:04:23 EDT 2007 | realchunks
Are you running different baords/product at the same time? Why are they buffering boards after screen print?
Electronics Forum | Wed May 16 12:29:57 EDT 2007 | realchunks
Hi Pete, I am familiar with their CM series machine. They have anti static bars inside the machine. If I were you I would measure the board after this machine to see if it retains any ESD. If not I don't think you have a problem.
Electronics Forum | Mon May 26 09:31:41 EDT 2008 | davef
What steps are taken in low residue wave soldering to assure the proper amount of flux is applied prior to soldering? * Too little flux can result in poor solder flow. * Too much flux can result in corrosive residues left on the board after soldering
