Provided is an ultrasonic vibrator unit that makes it possible to achieve a reduction in size, that has a high heat dissipation effect, that is suitable for use in an ultrasonic endoscope, and that has a wiring structure offering good workability when wiring the individual electrodes of an ultrasonic vibrator array and a large number of cables, a low degree of difficulty during work processes, and a low risk of disconnection as a result of the likelihood of a load being applied to the cables being low. The ultrasonic vibrator unit comprises: an ultrasonic vibrator array in which a plurality of ultrasonic vibrators are arranged； an electrode section comprising a plurality of electrodes that are electrically connected with each of the plurality of ultrasonic vibrators； an arc-shaped backing material layer arranged on the rear surface of the ultrasonic vibrator array； three or more wiring boards electrically connected with the plurality of electrodes of the electrode section； and three or more connectors to which a plurality of cables are individually connected. The three or more wiring boards are individually mounted to the three or more connectors and electrically connect the plurality of electrodes of the electrode section with the plurality of cables. The three or more connectors are arranged in the width direction of the backing material layer on the rear surface side of the backing material layer.L'invention concerne une unité de vibreurs à ultrasons qui permet d'obtenir une réduction de la taille, qui a un effet de dissipation de chaleur élevé, qui est appropriée pour être utilisée dans un endoscope à ultrasons, et qui possède une structure de câblage offrant une bonne maniabilité lors du câblage des électrodes individuelles d'un réseau de vibreurs à ultrasons et d'un grand nombre de câbles, un faible degré de difficulté pendant les processus de fonctionnement, et un faible risque de déconnexion en conséquence de la faible probabilité d'application d'une charge
