Patent ID: 6998926

Claim:
A piezoelectric oscillator, comprising: a first package housing a piezoelectric resonator element therein and having external terminal portions connected to excitation electrodes of the piezoelectric resonator element; and a second package housing an oscillating circuit element constituting an oscillating circuit, the first package being superposed on and fixed to the second package, in the second package, the oscillating circuit element, connected to a lead frame and being molded out of resin, and connection terminal portions and mounting terminals formed out of the lead frame being exposed at the second package, the external terminal portions of the first package being exposed at side surfaces of the first package, and the external terminal portions and the connection terminal portions of the second package being electrically connected to each other by a conductive material, and the second package having a first lead frame, a second lead frame, and end portions of the first lead frame being bent in a direction receding from the first package and being exposed externally to form first connection terminal portions, end portions of the second lead frame being bent in a direction approaching the first package and being exposed externally to form second connection terminal portions, the first connection terminal portions and the second connection terminal portions being arranged to two-dimensionally overlap each other, the oscillating circuit element being connected to inner terminals of the first and second lead frames, the first connection terminal portions being used as the mounting terminals, and the second connection terminal portions being used as the connection terminal portions electrically connected to the external terminal portions of the first package.