To provide by a simple configuration a connecting component of a vibrator which excels in its mounting property, and to provide a vibrator unit and the mounting structure thereof.

An insulation member of a rectangular parallelepiped has through holes correspondingly to the two lead wires of a cylindrical vibrator which pierce the insulation member from its one-plane side to its opposite other-plane side. On its four side-surface corner-portions, four electrode-patterns are formed respectively, and on its one-plane, a connecting pattern for connecting thereby its electrode-patterns positioned diagonally is so formed and is so passed on its one through-hole as to connect the connecting pattern with its one through-hole. Then, by using such two insulation members, their planes having no formed connecting pattern are so joined to each other as to join the through hole of one insulation-member which is connected with the connecting pattern thereof to the through hole of the other insulation member which is not connected with the connecting pattern thereof. Consequently, the connecting component of the vibrator is configured. Further, by joining the cylindrical vibrator to the connecting component of the vibrator, a vibrator unit is configured. Moreover, the vibrator unit is mounted on a circuit board via the electrode-pattern forming surfaces of the connecting component of the vibrator.