Hi Paul - 
        The simple answer to your question is YES! I have personal 
     experience (it wasn't a barrel of fun) on having some low residue 
     fluxes work and not work with palladium finishes. The use of an inert 
     environment can be an advantage but is not necessary. Palladium has a  
     slower dissolution rate than what you typically expect and therefore 
     you may need to adjust your solder reflow profile to accommodate this 
     change. It is reasonable to expect that you should get the same solder 
     joint geometry and appearance that you have been getting with Sn/Pb 
     but palladium is very flux dependent - try what you are using now and 
     also talk with you flux supplier on what they would recommend.
     
     
     Dave Hillman
     Rockwell Collins
     [log in to unmask]


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Subject: Palladium finish
Author:  [log in to unmask] at ccmgw1
Date:    5/27/96 3:15 PM


     We have a vendor who is changing the metallizations of its components 
     to palladium from tin/lead. 
     
     Has anyone had problems with this?
     
     Are there problems with no-clean fluxes?