Sot module

A SoT module comprising:

• a plate-shaped piezoelectric composite for generating bending vibration by the impression of an AC voltage,
• a plurality of elastic bodies, one ends of which are bonded to the main surface of the piezoelectric composite, the elastic bodies transmitting vibration of the piezoelectric composite, and
• a vibration plate has a main surface which is bonded to the other ends of the elastic bodies,
• a plurality of connecting members connecting the respective end portions of the plurality of piezoelectric elements,
• wherein the piezoelectric composite comprises a piezoelectric element formed in a rectangular plate,
• there is a position of the centroid of the piezoelectric composite between the plurality of elastic bodies,
• the piezoelectric composite comprises a plurality of piezoelectric elements, each of which is identical to the piezoelectric element, and each of the piezoelectric elements is partially connected to each other, and
• a central portion of each of the plurality of piezoelectric elements is not bonded by the other of the piezoelectric elements.