Abstract: An electroacoustic component is disclosed. In an embodiment, the electroacoustic component includes a piezoelectric substrate comprising a rare earth metal and calcium oxoborates (RE-COB) and component structures arranged on the substrate, the component structures being suitable for converting between RF signals and acoustic waves, wherein the waves are capable of propagation in a direction x??, and wherein the direction x?? is determined by Euler angles (?, ?, ?), the Euler angles being selected from angle ranges (20 . . . 90, 95 . . . 160, 15 . . . 55), (20 . . . 85, 95 . . . 160, 95 . . . 125) and (15 . . . 25, 85 . . . 100, 0 . . . 175).