Component termination finish other finishes

Several plated, tin-based lead-free finishes such as Sn, Sn Ag, Sn-Bi, Sn-Cu, and others have been found suitable with both Cu and alloy 42 component terminations (i.e., lead frames) [57]. 

Ease of component removal also affects reclamation efforts. Cradle-to-grave ownership of products by their manufacturers or others in the chain of commerce requires a careful evaluation of the recycling cost of an assembly. The processing required to remove several components from an assembly can be substantially reduced by selecting components with a common termination metallurgy, so they can all be removed at a common removal temperature. The selection of a lead-free alloy for component and board finishes should be with subsequent reclamation in mind [59]. 

---