Electronics Forum | Sun Apr 05 18:59:15 EDT 1998 | Graham Naisbitt
Jaqueline There are so many variables in the electronic assembly manufacturing process involving more than 12 different chemistries, that it is impossible to easily identify and determine the nature and reason of such residues. GEC Hirst Research in
Electronics Forum | Fri Dec 17 03:38:53 EST 1999 | cklau
Hello Guys; I "ll like to add some comment on Mr John message , see below.. "Be sure that the components to be used on the bottom can take the maximum heat of the wave and the delta T of entering the wave."-John The required preheat temp , that i
Electronics Forum | Fri Sep 09 15:50:08 EDT 2005 | chunks
The hand assembled part is soldered in? If so, the white residue may be from the operator using some added wave solder flux to get better wetting when hand soldering.
Electronics Forum | Tue May 26 16:35:53 EDT 1998 | Ryan Jennens
| | We recently made the switch to no-clean and the wurface mount is turning out beautifully. However, the wave solder process continues to put up a fight; we are getting a white residue on the surface of the PCB. The residue is not localized
Electronics Forum | Fri Jun 12 11:15:50 EDT 1998 | Ryan Jennens
Hey all! The wave solder warrior is back. I have found a flux which leave almost no residue (the least yet), but because of its super low solids content I absolutely cannot get topside fillets. The multi-layer, two sided board is on a pallet w
Electronics Forum | Mon Jan 16 11:00:33 EST 2006 | frankp
Danny, I'm hoping to hear more about this, too. I've seen it mentioned in a couple of other posts, but so far Sara G. (Foresite Inc.) is the only regular SMTNet poster that's actually seen this stuff. Really curious about residues, and what kind of f
Electronics Forum | Mon Apr 17 19:46:39 EDT 2000 | Dave F
Murad: Your customer is smart to be concerned about the affect of changing production processes on product reliability. Your Company is smart to inform customers and keep them in the loop about these changes. In developing your demonstration of th
Electronics Forum | Tue Jul 04 08:04:37 EDT 2006 | davef
The heat from a soldering iron will push raw flux across the surface of the board and into surprising places. It's bad practice to squirt liquid low residue flux on the board during rework, because the portion of the flux that does not get heated pr
Electronics Forum | Thu Jan 29 09:18:36 EST 2015 | davef
Nichrome, manganin, phosphor bronze etc are easy to solder ... the hard part is removing the corrosion * Manganin: 86% copper, 12% manganese, 2% nickel. Often, it's used in making cryogenic measurements, due to its low heat loss. * Select a flux for
Electronics Forum | Tue May 02 12:17:22 EDT 2000 | C.K.
Donnie is correct. "NO-Clean" doesn't translate to "no-residue!"..... who's giving you hassle about this - your ICT guys??!! Residue remaining on your PCB substrate is a function of many different things - flux deposition, solder mask (glossy means
