Electronics Forum | Tue Jun 03 22:51:51 EDT 2008 | davef
Your circuit would consist of: * White noise generator * ~30Khz bandpass filter * Amplifier * Power supply You can find modules for these functions on the web. Good luck.
Electronics Forum | Fri Sep 09 15:53:22 EDT 2005 | patrickbruneel
If the white residue is from a no-clean flux or no- clean solder flux core you can leave it on the board. (Consult with the flux or cored solder manufacturer) Because after being encapsulated with conformal coating the residue is sealed from humidity
Electronics Forum | Fri Oct 08 02:31:07 EDT 1999 | Brian
| | | | Hi, | | | | | | | | Help! Could anyone help to enlighten me on this? | | | | | | | | Question: | | | | | | | | If I have a CSP/BGA package of size X by Y and the standoff gap between the component and PCB is Z, What is the maximum allowab
Electronics Forum | Fri Feb 01 03:03:08 EST 2002 | madreindeer
Hi, That is very common in WS pastes.It is white residue (Salt) Usually it�s not dangerous it only looking bad. I think best way would be contact your paste supplier and they should know what would take a stain off if not, change supplier. There i
Electronics Forum | Fri Dec 10 08:44:52 EST 1999 | Dave F
Vinesh: You�ll find no papers that "clearly describes the harmful effects" of your style "of white residues," because no one is crazy enough to brag that they are doing what your customer wants you to do. The residue of no-clean fluxes are designe
Electronics Forum | Wed Oct 06 23:36:28 EDT 1999 | karlin
| | | Hi, | | | | | | Help! Could anyone help to enlighten me on this? | | | | | | Question: | | | | | | If I have a CSP/BGA package of size X by Y and the standoff gap between the component and PCB is Z, What is the maximum allowable Y/Z or X/Z
Electronics Forum | Thu Aug 05 17:32:31 EDT 2021 | cyber_wolf
Including non-spring tools ? Additionally I assume you know how to use the tool install utility and have looked for things like cracks in the big ribbon cables on the X ? Tools are not dry and have white grease on them etc ? There is a show force
Electronics Forum | Fri Sep 09 15:03:46 EDT 2005 | Amol
Hi, I am running a circuit board that needs a part to be put on it after cleaning and before conformal coating. the only problem is that after cleaning and hand assembly of the part, there is a thin whitish residue in the ckt board that one can see w
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 | Fri Sep 08 04:45:17 EDT 2000 | PeterB
As per Travis's reply it could be something other than the reflow process. Another good one is if the printed PCB's have been cleaned down due to print misregistration etc.. If not properly controlled paste residues can remain distributed about the p
