Electronics Forum | Tue Jun 24 13:46:21 EDT 2008 | bschreiber
I know it is not what you want to hear, but first and foremost, you must consult your local regulating agencies and here is why: Solder paste contains heavy metals. We are all familiar with the problems associated with lead, but lead free solder pas
Electronics Forum | Tue Mar 15 10:18:15 EDT 2011 | grahamcooper22
Hi, Does anyone have any experience of cleaning lead free solder paste residues off pcbs in a vapour degreasing process using Ensolv Ionic ? Any guide as to the best cleaning cycle would be appreciated. thanks
Electronics Forum | Thu Mar 17 15:34:35 EDT 2011 | grahamcooper22
Dear Rick , thanks for your reply. It is very helpful. I'll get chance to try the Ensolv in a lab next week to see if we can remove the paste residues. Thanks again
Electronics Forum | Thu May 04 01:52:17 EDT 2023 | davef
Look at IPC-7526 - Stencil and Misprinted Board Cleaning Handbook, Misprinted Circuit Board CleaningCLEANING [ https://www.multi-circuit-boards.eu/fileadmin/user_upload/downloads/leiterplatten_design-hilfe/ipc-7526.pdf ] ITW/EAE says "Typically, th
Electronics Forum | Thu Mar 17 09:53:20 EDT 2011 | rperkins
Hi Graham, I've worked in the industry selling EnSolv, Lenium, and now ENTRON solvents, which are all based on stabilized NPB. These solvents do not always clean the no lead pastes. The problem is that the pastes are becoming more like adhesives,
Electronics Forum | Mon Nov 06 13:14:10 EST 2017 | rdmarcga
Do I need to have an Ionic Contamination tester if my process is no-clean?
Electronics Forum | Fri Dec 15 11:06:06 EST 2006 | Gman
Hello All, Is Ionic Cleanliness testing using say an Ionograph on No-clean assemblies a valid test? If not, why? I understand factors like PCB cleanliness but is the 1.56ug/in2 IPC criteria valid for no-clean assemblies and can an Ionograph be used
Electronics Forum | Thu Mar 02 23:21:59 EST 2006 | KEN
I recently finished analysis of no-clean fluxes and Ionic contamination and cleaning processes. The results were eye opening. Summary: If you clean a no-clean you better do a good job. Many no-cleans produce a "waxy binder" to encapsulate the tro
Electronics Forum | Tue Feb 19 08:49:34 EST 2008 | rgduval
Get the ionic specs from your flux manufacturer, and show it to the designer. No-clean flux/solder is supposed to be low to minimal in ionic contamination, which allow the whole no-clean thing. If he needs further proof, you can have the board io
Electronics Forum | Mon Sep 08 10:34:37 EDT 2008 | blnorman
Because of our high volume production, we use no clean flux. We have experienced leakage currents with leadless QFNs. One problem is the part isn't being utilized as it should, but another is the flux residue. There is ionic residue in no-clean fl
