Electronics Forum | Mon Feb 27 19:48:32 EST 2006 | stepheniii
I'm not sure that would be valid. My understanding was that solids were trapped by other non-active flux residue. Which is why you can leave them on and why you see white residue after washing. I think the ROSE test would release particles that woul
Electronics Forum | Wed Jun 14 05:05:27 EDT 2006 | bk
Yes it's definately possible to have too much flux. You'll see a white residue film on the board. In the past we have had hipot issues cause of too much flux residue ,left on the boards. You defininately don't want to be using a no clean flux and sti
Electronics Forum | Fri Mar 02 16:12:45 EST 2007 | peter
We are in the early stages of converting al of our customers to No-Clean solder. I expect some customers to have no objections, others I am sure will be concerned about the "residue." I know that chemistries have improved greatly and if the process i
Electronics Forum | Thu May 24 22:56:42 EDT 2007 | davef
We'd guess that your white residue on the solder is from minerals in the supply water. We expect the levels of these minerals that you see: * Vary depending on the season. Check with your public water authority for anaylsis. [Recognize that this ma
Electronics Forum | Mon Aug 24 04:46:54 EDT 2009 | joannetjy
Hi Radek, Thanks for your reply. I use this flux with manual soldering process for the product. Is this flux suitable for manual soldering? or it is only for wave soldering? I have sent the board for analysis, and the report shown that the white res
Electronics Forum | Wed Feb 24 10:23:04 EST 2010 | xps
60° C). Moreover (by IPC standard)... "White residues resulting from no-clean or other processes are acceptable provided the residues from chemistries used have been qualified and documented as benign...". So, use an EDX or IC analysis in order to
Electronics Forum | Thu Jan 27 17:54:37 EST 2000 | Steve Harshbarger
Casimir, I have seen exactly what you are experiencing with the Kester 958 on other wave lines. No clean fluxes vary in how much flux residue is visually left behind. These no clean residues are typically not harmful to the PCB, but they are often
Electronics Forum | Wed Aug 18 12:35:41 EDT 1999 | Earl Moon
| | WE ARE CURRENTLY HAVING PROBLEMS REFLOWING BOARDS WITH WHITE TIN PLATING. WE ARE NOT GETTING GOOD WETTING ON THE PADS. | | WE HAVE CHECKED THE REFLOW PROFILE AND TRIED DIFFERENT PASTE'S. | | WE THINK THERE MAY BE CONTAMINATION OR OXIDATION ON THE
Electronics Forum | Wed Aug 18 21:18:00 EDT 1999 | Dave F
| WE ARE CURRENTLY HAVING PROBLEMS REFLOWING BOARDS WITH WHITE TIN PLATING. WE ARE NOT GETTING GOOD WETTING ON THE PADS. | WE HAVE CHECKED THE REFLOW PROFILE AND TRIED DIFFERENT PASTE'S. | WE THINK THERE MAY BE CONTAMINATION OR OXIDATION ON THE PADS.
Electronics Forum | Thu Jul 15 18:50:43 EDT 1999 | Raeto Zryd
We intend to use VOC free fluxe in our nytro machine. Does anybody know if there can be problems with water ie. solvent residues in the tunnel. Perhaps there are some white papers available on that issue.
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