Piezo-composite element

Application Theory:   Piezo-Composite transducers utilise the improved properties of ceramic rods embedded in a customised polymer matrix. This construction forms the basis for enhanced range capability and image quality of the complete transducer when compared to conventional monolithic transducer designs. It’s easy to take the sound adjustment with a sound wave incidence object because the sound impedance can control to low level. Moreover, an excellent characteristic like the adjustment of a piezo-electric characteristic, the emphasis of the vibration mode, and the effect etc. of the own dumping can be drawn out according to the volume ratio of ceramics.
Designs Shape:  Square or Cylinder Matrix

Character Combination of a piezoelectric and other non-piezoelectric material High energy conversion Low acoustic impedance

Typical Applications Hydrophones Projectors Transducers Single or Multi-Element Devices Transduction Materials

BOCHUANG Standard Piezo-composite Matrix

BC P/N	BC8x8-0.5x0.5	BC88x18-1x1	BC90x45-1x1
Material	PZT-5H	PZT-4D	PZT-4D
Matrix Number	8x8	88x18	90x45
Cell  Size	0.5x0.5mm	1x1mm	1x1mm
Working Frequency(kHz)	300	100	200
Delta  Frequency(kHz)	20-80	>=40	>=10
Electro-Mechanical  coupling factor (Kt)	>=0.6	>=0.6	>=0.6
Piezoelectric charge Constants (D33)	200-500 PC/N	>=200 PC/N	>=220 PC/N
Mechanical Q (Qm)	<=10	<=10	<=8
Dissipation factor [%]	<=0.03	<=0.02	<=0.03
Zm (Mray I)	<=8	<=8	<=7