Electronics Forum | Wed Apr 30 20:33:15 EDT 2003 | davef
Haaaa!!!! Yes, we�ve seen things like that. We found that a high input impedance amplifier worked fine in a room with a controlled environment and worked poorly in the sweat-shop portion of our plant. We were using good ol� WS609, straight water w
Electronics Forum | Mon May 31 21:50:59 EDT 1999 | Dave F
| | I have always thought it to be a good practice to wash SMA's with water soluble paste (WS609) soon after reflow. Is there a time limit as to how long a board should sit after reflow before washing said board? For instance; processing a double-
Electronics Forum | Tue Jun 05 11:52:01 EDT 2007 | rgduval
We just tested AMTECH's LF4300 with good results. Excellent reflow/profiling capabilities, good processing. And decent cleaning. I say decent cleaning, because we did run into a small issue. While using Qualitek's LF paste, we experienced a lot o
Electronics Forum | Wed Jun 09 10:26:55 EDT 2010 | smt_guy
Hi guys, which is good... AOI inspection before Aqueous wash of Water Soluble Flux processed PCB's or Wash first before AOI? regards,
Electronics Forum | Fri Dec 08 21:26:44 EST 2006 | billwestiet
You already have some good answers. A chemical isolation zone for RMA is a good idea. If you are looking for new see the two references you have and Austin America. If you are looking for used, see us at http://www.ietechnology.net. We presently
Electronics Forum | Thu Oct 24 17:32:54 EDT 2002 | ksfacinelli
The big problem we saw was the appearance of the solder joint after the water wash process. We saw the joints turn white through the absorption of moisture. Looked real bad but still functioned. I would stick with using only one of the processes a
Electronics Forum | Thu Jan 17 17:54:22 EST 2008 | dman97
Stay far away from the WS619 paste. It is a nightmare to get a decent solder joint out of it. And dont get me started on voiding issues with this paste. We eventually started to use Indium 3.2 lead free "water wash" paste and this drastically reduced
Electronics Forum | Mon Jul 27 17:09:20 EDT 1998 | Rin
| We are trying to reduce the number of units fail at system test due to flux on gold finger. We know so far that the flux is deposited onto the | goldfinger during touch-up or rework and to reduce the contamination we are | planning to imp
Electronics Forum | Tue May 21 17:16:51 EDT 2002 | davef
Larry, Yes, no matter how much you�d like to avoid using NC, you probably will have to start using the stuff, if the design [sales, in your case] types have their way. We can clean WS under 1mm and 1.25mm pitch BGA. For 0.8mm pitch BGA, we use NC.
Electronics Forum | Fri Dec 08 02:40:45 EST 2006 | Mike Konrad
Hi 'K', We manufacture both batch and inline defluxing equipment so we have no axe to grind with either technology. There are pros and cons associated with both technologies under specific conditions. Batch machines are typically good cleaners but
