I also like Telecore Plus.  Kester 245 is good too.

Karen Tellefsen - Electrical Testing
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   Re: [TN] looking for suggestions for no-clean flux-core PB-free wire     
   solder                                                                   
                                                                            
                                                                            
   Julie Silk                                                               
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               TechNet                                                      
                                                        02/27/2012 11:21 AM 
                                                                            
                                                                            
                                                                            
                                                                            
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          TechNet <[log in to unmask]>                                         
   Please respond to TechNet E-Mail Forum, Julie Silk                       
                                                                            
                                                                            
                                                                            






You are handsoldering through hole, so you will want a wire diameter that
will give you a good amount of solder in a small amount of time.  While you
want thin wire (.010-.015") for SMT, you want thicker for TH, but I'm not
sure of the exact diameter (.025-040?).  SAC 305, 2-3% flux so you get good
wetting.  We use Alpha Telecore Plus or Kester 275, maybe others.  Just a
note, the lead-free solder is not lead-free.  It usually has a Pb content
betwee 300 and 700 ppm.




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