Electronics Forum | Sat Oct 29 20:29:30 EDT 2016 | adamjs
Posting here because all the threads asking for feedback on it are locked. We have been extremely happy with the 4300 tacky flux for BGA attachment. Not only is it both washable and no-clean (i.e. wash-optional), it was also the only tacky flux tha
Electronics Forum | Sun Dec 11 22:39:36 EST 2016 | ppcbs
We have been using the Amtech line for over 12 years now with all of our PCB and BGA Rework. The NWS-4400 is mildly active and will give better results with Lead Free Solder. Note that the LF-4300 is considered a No-Clean. However it will show lea
Electronics Forum | Wed Jan 05 08:58:13 EST 2005 | davef
Q1. Is it enough to use only water while cleaning or is it necessary to use any additional chemistries and/or saponifiers as well? A1. It depends on: * Flux residues that you're cleaning * Standoff of the components * Cleaning technology [we've neve
Electronics Forum | Thu Jul 14 16:07:16 EDT 2005 | saragorcos
Here is a link to a specific article about cleaning no-clean assemblies: http://www.residues.com/pdfs/Clean_No_Clean.pdf Our facility does a lot of contract cleaning and cleanliness testing for various companies around the world, and that study s
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.
Electronics Forum | Thu Jul 14 01:43:09 EDT 2005 | pyramus
Solder paste used was Kester FL250M (no-clean).... components affected were only chip components 0603, no BGA & no IC components.
Electronics Forum | Sat Jul 16 03:59:31 EDT 2005 | pyramus
Thanks Everybody!!!
Electronics Forum | Thu Jul 14 00:54:53 EDT 2005 | Pyramus
Hi production encountered a problem today. There have been a mix-up of solder paste. We are currently running clean process in one side of board. Unfortunately when PD run the other side process they were able to used a wrong no-clean solder paste.
Electronics Forum | Thu Jul 14 09:42:36 EDT 2005 | saragorcos
Our facility helps customers clean no-clean soldered boards on a regular basis, and it definitely can be done but is a little more challenging than boards built with water soluble flux - one piece of advice I would give is to use low water pressure (
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.
