A piezoelectric electroacoustic transducer, including a plurality of piezoelectric
layers deposited to define a deposited product, flexurally vibrates the deposited
product by polarizing the entire piezoelectric ceramic layers in the same thickness
direction and also by applying an alternating signal between external electrodes
disposed on the front/rear major surfaces of the deposited product and an internal
electrode disposed between the ceramic layers. A dummy electrode is provided between
the ceramic layers outside the internal electrode via a gap, and a portion of the
internal electrode is exposed at at least one side surface of the piezoelectric
ceramic layers, while the dummy electrode is exposed at the other side surface
of the piezoelectric ceramic layers. The external electrodes extend to the side
surfaces other than the side surface at which the internal electrode is exposed.
