TH87269B - Systems and Methods of Friting and Whiskers Resistance Coatings - Google Patents

Abstract

Enameled conductive substrates (26) where multiple closely spaced leads (10) and Tin Whister make up a short circuit substrates (26). Lead frames, terminal pins, and conductive substrates (26) contain a certain number of leads (16) separated by between (14) that can be welded by tin. Whisker, silver-based or silver-based alloy (28) with at least one coating, and fine-grain tin Or tin-based alloys (30), directly coated with silver layer mentioned above The coated conductive substrates (26) as an alternative are particularly useful. When the carcass from Wear fretting may oxidize. And increase the electrical resistance, as in the connector assembly This conductive substrate (26) has a transverse barrier layer (32) that grips on the substrate (26), the next gripping layer, as well as the loss layer (34) that grips on it. Effective barrier layer (32) to The intermetal is assembled with tin, a low resistance metal oxide layer (40) and the outermost layer (36) of tin or tin based alloys. The barrier layer (32) to be used is a nickel-based or nickel-based alloy and a low-resistivity metal oxide layer (40) that should be silver or a silver-based alloy (Figure 4).

Claims (2)

1. Conductive elements, which include A certain number of integral parts (10) separated by a distance (24) that can be joined by Scripps Whisker; Silver-based coatings or silver-based alloys (28) At least one surface of at least one Of many of the gist (10) already mentioned; Coating of fine grain tin layer Or tin-based alloys (30) directly, silver class (28) as mentioned above 2.Conductive element of claim 1, where the distance (24: