This 3 page document is about the reasons behind the ban on lead in soldering and rounds up the alternative metals and alloys such as Sn, Cu, Ag, SnCu, SnAg, SnAgCu, Bi, Sb, In and Zn. The positive and negative aspects of using these alternatives in component and board finishings as well as in solders. Melting points, sensitivity to impurities and need of special fluxes are also pointed out. |
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