Hey TechNet friends I thank you very much for the great 
     comments and information on Eutectic and Plastic ranges for 
     the two solders.  You all really helped make a point and I 
     appreciate it very much.  
     
     THE POINT
     If SMD is going to use a paste with a plastic range they 
     need to inform the wave solder guys before they make the 
     change.  Like my good TechNet friend Dave Hillman said, "a 
     robust wave solder process probably won't be affected . . 
     ."and he is right, however, there are some 
     critical/tight/stubborn boards that might.  That was my 
     case.  We were reflowing a QFD on the top side where the 2% 
     Ag paste was being used.    
     
     A gentlemen ask why use the 2% silver in a TechNet message 
     yesterday (11/24/96).  From what I have heard, and seen,  
     there used to be a problem with leaching before the great 
     Nickel barrier was constructed on components.  It's not a 
     problem now since the leaching problem was solved.
     
     Once again thanks.  
     Ron Hollandsworth
     [log in to unmask]     

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