Electronics Forum | Fri Aug 24 09:29:08 EDT 2007 | jgrootkoerkamp
Solder balls with wave soldering can have different causes. The two most important are the solderresist and the flux. I have similar problems, after changes the flux type 90% off all solderballs are gone. KR, Joris Groot koerkamp
Electronics Forum | Fri Jul 15 10:56:19 EDT 2005 | pr
As Russ said, you do a DOE beforehand. BUT Maybe we are missing something, we do SPC after the wave (1/5) to catch defect trends and fix them with a minimum of inspection. If you are running a 2,000 piece pull, are you that confident that your origin
Electronics Forum | Fri Jul 15 13:28:55 EDT 2005 | Brian
A process consists of much more than just thee machine. When developing a cause and effect diagram ffor the process, there are many parameters that fall outside the machine itself. There are Man, Machine, Methods, and Materials. Just monitoring th
Electronics Forum | Wed May 21 08:16:57 EDT 2008 | tonyamenson
Good morning gentlemen, I could use some advise as to the min / max windows for the wave process. We have had little problems with our leaded wave but when applying the same process to lead-free wave we are having problems. Obvisouly the temps are
Electronics Forum | Tue Mar 07 21:35:16 EST 2006 | Cal Kolokoy
Samir, From experience, the only board test situation where tented via's have difficulty with contact is with a Flying Probe type tester. Otherwise, for traditional ICT, the force of the pogo pins, correct probe type, and fixture design should do th
Electronics Forum | Mon Jan 15 09:19:29 EST 2007 | tk380514
We use Alpha EF-2202 low-VOC No-Clean flux Selective wave soldering cassettes Bottom pre-heating wave soldering machine We have one component that will not solder properly: http://www.epcos.com/web/generator/Web/Sections/ProductCatalog/Capacitors/Ul
Electronics Forum | Mon Dec 22 20:16:17 EST 2008 | davef
The first question in solving the "ol' SMT component loss after second-side wave operation" problem is: So, what makes you think the components actually came-off in the wave and not during some previous 'handling'? Putting that aside, we'll play thi
Electronics Forum | Thu May 22 12:32:35 EDT 2008 | tonyamenson
So here is my problem with the info you gave. If my preheat topside max is 150 - 170 C but my flux calls out a topside temp of 93 - 104 C..... ....Im pretty much up a creek becuase of a poor flux choice? FYI. we are using the Indium 3590-TX for bo
Electronics Forum | Mon Mar 13 14:26:45 EST 2006 | Wave Master Larry
Well, im not sure what plane you guys are on, but I can back up my what im talking about. Ya see I wnet to Soltec traingin back in 1995 for our new wave. I got a diploma proofing that I know what i'm talking about. no one else in my company has on
Electronics Forum | Tue Jan 16 07:51:19 EST 2007 | realchunks
Your Quality Manager won't let you make changes, yet you get blammed for process problems? First, you need a change in management. Second, if you can't change set pre-heat temps, change the conveyor speed. Slow it down and see if your joints loo
