| 摘要 |
Provided is a surface acoustic wave device comprising a piezoelectric substrate (1), an IDT electrode (2) having an interdigital electrode finger (3) formed on the piezoelectric substrate (1), and a wiring electrode (5) connected to the IDT electrode (2), wherein the electrode finger (3) is configured such that, in a cross section intersecting the longitudinal direction, the line width of the bottom side and the line width of the top side are smaller than the maximum line width of the electrode finger. |
