Daishinku Corporation

Yuka Kojo

Minoru Iizuka

Satoru Ishino

In a piezoelectric resonator device according to an embodiment, an internal space is formed by bonding a first sealing member to a crystal resonator plate and bonding a second sealing member to the crystal resonator plate. The internal space hermetically seals a vibrating part including a first excitation electrode and a second excitation electrode of the crystal resonator plate. Seal paths that hermetically seal the vibrating part of the crystal resonator plate are formed to have an annular shape in plan view. A plurality of external electrode terminals is formed on a second main surface of the second sealing member to be electrically connected to an external circuit board. The external electrode terminals are respectively disposed on and along an external frame part surrounding the internal space in plan view.

Piezoelectric resonator device

A base of a surface-mount electronic component package holds an electronic component element and is to be mounted on a circuit board with a conductive bonding material. The base has a principal surface and an external connection terminal to be electrically connected to the circuit board. The external connection terminal is formed in the principal surface. The base includes a bump formed on the external connection terminal. The bump is smaller than the external connection terminal. The base has a distance d between an outer periphery end edge of the external connection terminal and an outer periphery end edge of the bump along an attenuating direction of stress on the external connection terminal The stress is generated in association of mounting of the base on the circuit board. The distance d is more than 0.00 mm and equal to or less than 0.45 mm.

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Kakogawa, Japan

Yuka Kojo