Electronics Forum | Mon Jan 17 17:38:29 EST 2011 | bandjwet
All: I am reaching out to get some suggestions on the right flux to use as well as a recommended cleaning process for soldering a KOVAR RF shield using 80/20 Au/Sn solder to a ceramic hybrid. The recommended profile is 4-5 min at 280C and at least
Electronics Forum | Mon Apr 14 20:13:40 EDT 2014 | davef
So, someone is going to get a chance to buy a nice and shiny oven, eh? Summary from my notes of old thread on SMTnet: Some people melt sugar and use that solution to clean cooked-on flux residue. Dissolve sugar into warm water, spray it on the area t
Electronics Forum | Thu Jul 31 15:41:23 EDT 2003 | davef
Q: Could any of you guys tell me what exactly is this greenish thing ? A: No, but is not copper oxide. Copper oxide is brown, the color of a penny [here in the US] or an untreated copper laminated trace on a board. Many copper salts are greenish in
Electronics Forum | Sat Oct 09 03:26:58 EDT 1999 | Brian
| Always experiencing dross in pot with different characteristic such as color, shape, dry/wet etc. Any paper, wetsites provide the more comprehesive explanation on its characteristic | Dross is a mixture of various things. The obvious ones are met
Electronics Forum | Thu Feb 17 15:01:23 EST 2005 | davef
We're not familiar with your DYMAX #984-LVUF. The problem is not with your conformal coating. The problem is with your 0805 [and not all of 0805, probably just those from a specific supplier]. This lack of coverage of components is called dewetting
Electronics Forum | Tue Jan 15 21:44:05 EST 2008 | davef
We believe that tip tinners reduce the life of the tip, also. Why do you use such a product? We like using solder paste to clean solder tips. Place expired solder paste in a covered container. Open container and dip the tip. It comes out clean and s
Electronics Forum | Thu Jul 27 21:57:16 EDT 2000 | Dave F
Hi Doug: Responding to your questions: � If gold over nickel is self limiting ... You didn�t say whether you gold plating was electroless or immersion. Electroless is not is self limiting. It can plate up to 5 thou. Expect immersion plated gold to
Electronics Forum | Tue May 08 15:05:08 EDT 2001 | davef
It�s reasonable to want to understand this strange looking fabrication, before moving on to other issues. Before moving on to that, tell us more about your thinking the silicon being from the BGA package. What kind of plastic package is this? Desc
Electronics Forum | Fri Jul 23 09:17:30 EDT 1999 | Earl Moon
| Dear Jason, | Smart Sonic has over 500 stencil cleaners in operation around the world. The Smart Sonic Stencil Cleaning Process is the only cleaning process that is Certified Environmentally Safe by the Environmental Protection Agency (EPA) and ve
Electronics Forum | Fri Jul 23 12:47:20 EDT 1999 | Bill Schreiber
Dear Earl, At Smart Sonic, we have seen fiducial deterioration as a result of the epoxy not being water-safe. Unfortunately, many stencil manufacturers believe their customers are still cleaning with solvents and therefore use an epoxy that is solve
