By now you will have been inundated with off line answers.

Just to address your RoHS query.
RoHS banned specific, complex halides (the type used in fire retardants),
but not all halides. This spilled over into to flux technology as the simple
tests carried out in the field, detect the presence of halogens (the family
of chemical elements whose products are called halides) but can not tell how
they are combine together with other elements, i.e. what sort of halides
have the halogens been made into. We can have a reasoned rational discussion
here about this, but in the outer world everything is simplified. In this
case to: All halides bad. So the industry gave up on that and avoided/killed
the issue by moving to halide free fluxes. Thus the quite separate halide
versus non halide flux debate we have all enjoyed for decades was decided
for halide-free by the law of unintended consequences. A rather pointless
diversion from the road to progress.

Regards 
 
Mike 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Nutting, Phil
Sent: Wednesday, June 26, 2013 9:17 PM
To: [log in to unmask]
Subject: [TN] recommendations (offline) for flux

I have several applications where I need halide free (<0.05%) wave solder
flux and cored solder.

For the wave it should be water soluble, alcohol based, for a foaming
application and usable on tin/lead and lead free.

For cored solder we currently use some 63/73, but most of our lead-free is
Sc995e.

Wasn't halide one of the banned substances in the RoHS directive?

Phil Nutting  |  HVP Development Engineer   |  Excelitas Technologies Corp

Office: +1 978.224.4152
35 Congress St, Salem, MA  01970 USA
[log in to unmask]<mailto:[log in to unmask]>
www.excelitas.com<http://www.excelitas.com/>


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