Thin film circuit connector used with spring contacts - employs repeated plating technique with hard and soft gold layers

摘要

A thin film circuit connector for use with spring contacts only, gives a good characteristics even though the thin film is repeatedly inserted in and removed from the spring contact connector. The thin film circuit is mounted on a ceramic substrate (1) with a set of parallel contact strips consisting of a layered printed pattern for making connection to a suitable gold plated contact (4) in a small chassis element (3). The contact portion consists of a layer of nickel chromium, titanium, palladium and hard and soft gold layers. The gold layers consist of 4 microns thick hard gold layer and a 1 micron thick soft gold layer.