FLEXIBLE PRINTED WIRING BOARD TERMINAL PART OR FLEXIBLE FLAT CABLE TERMINAL PART

摘要

In a terminal portion according to one embodiment of the present invention, the terminal portion being of a flexible print circuit board or a flexible flat cable and for connecter-fitting, a copper or a copper alloy wiring having a pure tin or a tin alloy plating layer formed thereon is thermally treated so as to form an inter-metal compound including copper and tin on the copper or the copper alloy wiring, and that a remaining thickness of the pure tin or the tin alloy plating layer is from 0.2 µm to 1.6 µm.