A method for manufacturing a surface acoustic wave apparatus to be mounted
via bumps by a flip chip bonding system prevents peeling of electrode
pads from the piezoelectric substrate and cracks in the piezoelectric
substrate from occurring during the formation of the bumps or at other
times during the manufacturing process. In the method of manufacturing a
surface acoustic wave apparatus, a first electrode layer of the electrode
pad is formed on a piezoelectric substrate by etching, an electrode for a
surface acoustic wave element is formed by a lift-off method after the
first electrode layer is formed, and thereafter, an electrode film
including a second electrode layer of the electrode pad and a wiring
electrode is formed.