For package designs .300 inches square or smaller.
Williams Advanced Materials developed the Micro-Lid™ in the late 1990’s as a cost alternative to the traditional Combo-Lid.
Composition
Base metal is A-42 per ASTM F-30-90. The A42 is plated with 80-100 microinches of sulfimate Ni followed by 35-50 microinches of Au. It is clad on one side with 80Au, 20Sn at .0012+/-.0002 thick. An Au over-flash is added to cover the edges to ensure that one side can be distinguished from the other.
The above description refers to our standard products. Plating and clad properties can be modified to meet specific needs.
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