This study presents the fabrication of triple-layer piezoelectric vibrator and analyzes its electrical impedance. The characterization of the electrical impedance and equivalent circuit of the triple-layer piezoelectric element in thickness vibration mode is discussed. The dielectric, elastic, piezoelectric and electro mechanical coupling constants (kt) of the samples were evaluated from the experimental impedance data. A simple but practical equivalent circuit expressed using only the electrical parameters of triple-layer piezoelectric vibrator, was explored. Analysis based on this equivalent circuit can provide a good understanding of the behavior of triple-layer piezoelectric vibrators as a function of frequency in the thickness mode. This will in turn aid the design and analysis of piezoelectric transducers.