SMD Piezo Transducer 9x9x1.8mm

Electrical Specifications:    Type   Unit SPT-9020B-03040     Rated Voltage(Square wave) Vp-p 3     Operating Voltage  Vp-p 1~25 *  Rated Current (Max)  mA 3 *  Min sound output at 10cm  dB 70 *  Resonant Frequency  Hz 4000±500Hz   Capacitance at 120Hz     pF 12000±30%    Operating Temperature ℃ -20 ~ +70    Storage Temperature ℃ -30 ~+80  &nbs…