Electronics Forum | Mon Jul 30 21:03:44 EDT 2001 | davef
You should specify the level of res based on the effect of the res on the end-use of the product. J-STD-001 defines cleanliness requirements for ALL flux types, including water soluble and no-clean that you mention. 1 There is no equivalency betwee
Electronics Forum | Fri Dec 01 15:37:50 EST 2000 | Dason C
Jim, you may need to look with different paste instead of the cleaning solvent. Please advise what is the paste which you currently using? Beside, when you talking about the board stayed in hot area, is it a drying area or the cleaning zone. If it
Electronics Forum | Fri Feb 04 09:23:21 EST 2000 | Casimir Budzinski
If No-Clean flux does not need to be cleaned, then why do I get readings of up to 27(ug NaCl/sq in) on boards that are not washed, up to 23.4(ug NaCl/sq in) on boards washed with DI water only and from 1.2 to 10.1(ug NaCl/sq in) on boards washed with
Electronics Forum | Thu Oct 07 15:21:27 EDT 1999 | Scott S. Snider
| Is anyone aware of a web page for military spec's? I am looking for Mil-P-28809. | | Thanks, | Mike Demos | I'm trusting my memory on this which often times leads me astray.. Didn't that spec have something to do with cleaning. It seemed the
Electronics Forum | Mon Oct 11 12:27:48 EDT 1999 | Mike Demos
Thank you all for your replies. I guess my age in this industry is showing. This military spec. does not appear to be in existance. So, let me make my request a little more to the point: Is anyone aware of a specification specifically referencing
Electronics Forum | Sat Oct 04 00:21:00 EDT 2003 | Dean
It would help to run a carbon, anion, cation, mixed-bed configuration with pure DI as the final rinse. IF your incomming water is really bad you can run a RO unit to "prepare" the water for ion exchange. Do you run omega meter or ionograph testing
Electronics Forum | Sun Feb 01 18:24:52 EST 2004 | Dean
Ok, maybe I'm missing something here: It's a no clean flux type AND your going to wash it? Why not migrate to OA Flux and just run DI water with Ion-Exchange beds? Benefits: No need for ultrasonics No need for chemical isolation No need for cleani
Electronics Forum | Tue Jul 27 11:16:40 EDT 2004 | carterhoward
Hello , I agree with the solder ball theory, we used to have an issue with high humidity and it produced the results you�re describing. Our solution to this since adding dehumidifiers was too costly was to increase the quantity of intake ducts for t
Electronics Forum | Thu Oct 05 07:23:34 EDT 2006 | Chris
Hi all experts, I have no background about PCB or SMT process. I am now encountering some issues after SMT - Unstable stitch bonding condition. I am now suspecting some contaminants remain on lead after cleaning. Therefore, how can I check th
Electronics Forum | Fri May 18 13:08:19 EDT 2012 | blnorman
I'll chime in here as well. If you have adhesion problems, 90% of the time it's contamination on the substrate (soldermask, flux residues, cleaner residues, etc.). Like Dave said, omega meter is a test for gross cleanliness, and it's OK for process
