PROBLEM TO BE SOLVED: To provide an ultrasonic wave device unit that can be reduced in size with a simple configuration, an ultrasonic wave probe, and an ultrasonic wave apparatus.SOLUTION: An ultrasonic wave device unit comprises: an ultrasonic wave device 5 that has device-side terminals reinforcing plates 71 that each have a supporting part supporting the ultrasonic wave device and a flexible printed board that is connected to the ultrasonic wave device. The flexible printed board includes a connection part 614 that is connected to the device-side terminal, and a bent part 615 that is continuous to the connection part and extended in a direction separating from the ultrasonic wave device. The reinforcing plates each include: a bent guide part 715 that is provided on a first side along a first direction intersecting with the extension direction, has an arc curved surface convex in a direction separating from the supporting part, and is opposite to the bent part and a guide surface 711E that is provided on an end in the first direction and guides an end edge of the bent part.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2019,JPO&INPIT【課題】簡素な構成で小型化を図れる超音波デバイスユニット、超音波探触子、及び超音波装置を提供する。【解決手段】超音波デバイスユニットは、デバイス側端子を有する超音波デバイス5と、超音波デバイスを支持する支持部を有する補強板71と、超音波デバイスに接続されるフレキシブルプリント基板と、を備える。フレキシブルプリント基板は、デバイス側端子に接続される接続部614と、接続部に連続し、超音波デバイスから離れる方向に延設され、延出方向に沿う端縁を有する屈曲部615と、を備える。補強板は、延出方向に交差する第一方向に沿う第一辺に設けられ、支持部から離れる方向に凸となる円弧曲面を有し、屈曲部に対向する屈曲案内部715と、屈曲案内部の、第一方向の端部に設けられ、屈曲部の端縁を案内するガイド面711Eと、を備える。【選択図】図4
