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February 2012

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Subject:
From:
Karen Tellefsen <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Karen Tellefsen <[log in to unmask]>
Date:
Mon, 27 Feb 2012 08:53:51 -0500
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I wouldn't push the halide-free, rosin-free too hard.  I'd suggest an ROL0,
ROL1, REL0 or REL1 core flux with the lowest flux percent that will do the
job.  If anyone wants Alpha suggestions and SIR/ECM data, email me
privately.    Henkel/Multicore, Indium, Kester, Qualitek have suitable wire
also.

Karen Tellefsen - Electrical Testing
[log in to unmask]
908-791-3069



                                                                            
                                                                            
                                                                            
   Re: [TN] looking for suggestions for no-clean flux-core PB-free wire     
   solder                                                                   
                                                                            
                                                                            
   Nigel Burtt                                                              
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                TechNet                                                     
                                                        02/27/2012 03:53 AM 
                                                                            
                                                                            
                                                                            
                                                                            
   Sent by:                                                                 
          TechNet <[log in to unmask]>                                         
   Please respond to TechNet E-Mail Forum, Nigel Burtt                 
                                                                            
                                                                            
                                                                            






Would suggest a SAC305 alloy wire and unless the soldering job is
particularly troublesome, use around a 1% flux core which is rosin-free and
halide-free. You may wish to find a flux which is similar chemistry to
existing lead-free paste and wave solder flux too.

All the usual suspects (Alpha, Henkel/Multicore, Indium, Kester, Qualitek
etc etc) will have suitable products. Suggest you ask for sample (small
reel) from various suppliers you are comfortable with based upon your
preferred criteria and let them choose what they find works best for them.
Having done this before, ours picked Alpha FT2002 - but the deciding aspect
at the time was the green colour of the plastic spool which easily
differentiated it from the reels of SnPb solder on the benches!




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