Electronics Forum | Thu Jul 22 15:18:28 EDT 2004 | russ
Remove the paste from the fridge the night before, If you feel the need to knead we just put the paste on the stencil and work it a little bit with a spatula. Russ
Electronics Forum | Thu Jul 22 22:08:08 EDT 2004 | KEN
FYI AIM has a patnented in-tube mixing propeller. Crazy, but it actually works.
Electronics Forum | Mon Jul 26 16:46:40 EDT 2004 | Frank
Can you use one of those hot-dog rollers (cookers?) you see in the corner convenient stores to keep the paste tubes moving to eliminate the separation? Ya know, the cookers with the week old hot dogs on it that are all shrivelled up?
Electronics Forum | Mon Sep 13 18:34:31 EDT 2004 | russ
Use Water soluble if you can, if not I would try the Indium SMQ NC paste, this residue stays soft. I would also change ICT probes to the "drill type". Russ
Electronics Forum | Thu Mar 10 13:05:41 EST 2005 | patrickbruneel
This phenomenon is caused by a high amount of halogens (Cl, Br etc.) used in the flux activators or in the flux surfactants. We've seen effects creating all colors of the rainbow. Changing to No-Clean (halide-free) will eliminate this color effect.
Electronics Forum | Thu Mar 10 14:31:57 EST 2005 | russ
Patrick told you why, But here is some more info for ya, I would absolutely not recommend that wires be tinned with OA. The residue will never get cleaned underneath the insulation and all of your strands will strt to break in the near/far future.
Electronics Forum | Wed Jun 22 16:11:13 EDT 2005 | Steve
You know Pat, I should just call you directly rather than post this stuff. You always have an answer. You must have been around awhile huh? :)
Electronics Forum | Wed Jul 06 12:25:55 EDT 2005 | HOSS
Bob, We have seen this same issue and haven't found a solution other than touching up to create a toe fillet. Luckily, it's a low volume product, for now. What have you done to combat this? Thanks.
Electronics Forum | Thu Jul 14 13:45:32 EDT 2005 | slthomas
We've only seen it done by accident, and the result was a lot of white flux residue. You do need to make sure you get it all off, and to do so most likely means using a saponifier like sara suggested.
Electronics Forum | Mon Jul 18 00:00:35 EDT 2005 | adlsmt
I have nothing to add technically but we have been washing no-clean for years. Use very clean filtered DI water to avoid the white residue issue and some good detergent or sopanifier and you will get great results.
