| 摘要 |
The crystal resonator for surface mounting includes: a single-layer base substrate, including a pair of crystal holding terminals on a major face; a crystal piece, including an excitation electrode on two major faces, and electrically and mechanically connected to the crystal holding terminals; and a concave metal cover, including an opening end face bonded to an outer peripheral surface of the base substrate through curing of a liquid resin. The end face electrode is electrically connected through an electrically conducting path of the outer peripheral surface extended from the crystal holding terminals, and the crystal resonator for surface mounting is disposed as a structure that includes an end face region of two positions at least being opposite to the electrically conducting path in the opening end face of the metal cover spaced from a front end of a protruding portion through the protruding portion disposed on the opening end face.
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