| 摘要 |
PROBLEM TO BE SOLVED: To provide a SAW device which can have its electric power resistance improved when made small-sized or high in frequency, and to provide its manufacturing method. SOLUTION: In the SAW device, an electrode formed on a piezoelectric substrate 31 is composed of a 1st metal film 32 and a 2nd metal film 33 which is formed of a material different from the 1st metal film 32 on the sidewall of the 1st metal film.
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