Acoustic Wave Device and Method for Manufacturing Same

摘要

A SAW device (1) has a substrate (3) configured to propagate acoustic waves; an IDT electrode (15) on a first main surface (3a) of a substrate (3); and an electrode pad (13) on the first main surface (3a) electrically connected to the IDT electrode (15). The SAW device (1) also has a terminal with a pillar-shape (column part (7z)) setted up on the electrode pad (13); a third conductive layer (39) extending from a side surface of the column part (7z); and a cover (5) forming a vibration space (S) above the IDT electrode (15) and covering the side surface of the column part (7z), and the third conductive layer (39).