An ultrasonic transducer (200), comprising: a piezoelectric vibrator assembly (10), an acoustic matching layer (20), a heat sink (30), and an acoustic absorption layer (40). The piezoelectric vibrator assembly (10) has a first side (12) and a second side (13) and comprises at least one piezoelectric vibrator (11). The acoustic matching layer (20) is disposed at the first side (12) of the piezoelectric vibrator assembly (10). The heat sink (30) is disposed at the second side (13) of the piezoelectric vibrator assembly (10) and comprises a main body (31), and a head portion (32) and a tail portion (33) disposed at two ends of the main body (31), respectively. The main body (31) is generally formed into a cylindrical shape and has a central axis extending in a direction from the head portion (32) to the tail portion (33). The head portion (32) of the heat sink (30) is opposite to the piezoelectric vibrator assembly (10), and the tail portion (33) thereof faces away from the piezoelectric vibrator assembly (10). A surface of the tail portion (33) of the heat sink (30) disposed away from the head portion (32) is a first surface (331). The first surface (331) is an oblique surface or a conical surface. The included angle between the first surface (331) and the central axis is an acute angle. The acoustic absorption layer (40) at least covers the first surface (331).La présente invention concerne un transducteur d'ultrasons (200), comprenant : un ensemble vibreur piézoélectrique (10), une couche de correspondance acoustique (20), un dissipateur thermique (30), et une couche d'absorption acoustique (40). L'ensemble vibreur piézoélectrique (10) présente un premier côté (12) et un second côté (13) et comprend au moins un vibreur piézoélectrique (11). La couche de correspondance acoustique (20) est disposée au premier côté (12) de l'ensemble vibreur piézoélectrique (10). Le dissipateur thermique (30) est disposé au second côté (13) de l'ensemble vibreur piézoélectrique (10) et
