piezo actuator,Multilayer piezo stack,piezo creamic Type:PSt150/1.2*1.2/1.7 Material Properties Material:PZT(PZT5H) Rel. dielectric constant µref: 5400 Loss factor: 200*10-4 Coupling factor: KP=0.62, K31=0.34, K33=0.68 Piezo coefficient:d31=-290pm/V, d33=+635pm/V Elast.compliance: S33E =18.1*10-12m ²/N, S11E =14.8*10-12m ²/N Frequency constant: Radial=2040m/sec, Thickness=1800m/sec, Transverse=1410m/sec, Longitudinal=1370m/sec Quality factor(resonance):70 Density: 8g/cm�³ Curie temperature: 150�°C Specific heat: 380Ws/�°K kg Thermal conductivity: ca.1.5 Ws/m�·K(axial direction) Above-mentioned parameters can vary significantly with the operating electrical field strength. Temperature Operating temperature: -50~+100 C(according to resin). If >100�°C, PZT performance will be reduced reversibly Above Curie temperature, piezo actuators will be permanently depolarized. Technical data� Eg:PSt150/1.2*1.2/1.7 Max./Stroke[�¼m]�±15%:1/0.8 El. capacitance [�¼F]�±20%:0.045 Stiffness [N/�¼m]�±20%:50 Resonant frequency [kHz]�±20%:100 Blocking Force [N]:80 Mass [g]�±5%:0.09 Applications Fiber stretching Active vibration control Piezo dispensing valve Precision positioning Piezo deformable mirror Piezo gripper Laser cavity tuning