Electronics Forum | Mon Jun 15 15:33:51 EDT 2009 | hegemon
IMHO I would suggest that if you are using flux only during a BGA placement on a small run, that you first tin the pads with your soldering iron, then level the pads back out with wick. Accomplishes two things; adds a little metal to the joint to ma
Electronics Forum | Wed Apr 27 08:19:41 EDT 2011 | charliedci
We are in the process of changing over our wave solder flux from alcohol based no clean to VOC free water based no clean. We are running an old Eletrovert with foam fluxer, tin lead solder. After preliminary testing on scrap boards and now starting t
Electronics Forum | Wed Oct 23 07:32:18 EDT 2002 | Yannick
Sorry, the layer is made of flux.
Electronics Forum | Tue Oct 22 20:40:34 EDT 2002 | davef
So, what is this layer made of?
Electronics Forum | Mon Jun 01 21:40:18 EDT 2009 | kircchoffs
i need some inputs regarding this process. is this really eliminates voids and other solderability issues on BGA's?
Electronics Forum | Sun Mar 28 17:05:13 EST 1999 | Glenn Peters
I require some feed back from any one who knows about using a voc free flux in a nitrogen wave solder machine soldering both through hle and smt componants. What disadvantages are there when using this flux? Do you have any contact details with any o
Electronics Forum | Wed Nov 06 05:13:01 EST 2002 | Dreamsniper
Crystalline flux if it is really clear should not be a problem. We were using Amtech paste before and we have the same results. Sometimes we mistakenly see it as a dry joint because of the reflections from the lighting of our Metcal inspection system
Electronics Forum | Mon Sep 28 09:35:28 EDT 1998 | Clive Heke
I have had some field failures returned recently, the boards had flux contamination under the components in a sensitive area, Nothing really visible until the component was removed, and the board had no evidence of rework of any type. Is it possib
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 | Wed Dec 20 04:43:36 EST 2006 | greg york
Any decent flux would volatise off with the heat of the wave unless absorbed into the solder mask. Test this by trying to clean in alcohol or common solvent aerosol, if it does not clean then it is probably Mineral Salts from solder mask fillers. Ano
