A flexible, thin plate that
generates electrical charge in response to mechanical stress or vibration.
Ideal for sensing applications, audio feedback, and energy harvesting in
various electronic projects.
Description
A piezo plate, also known as a
piezoelectric transducer, is a device that generates an electrical charge in
response to applied mechanical stress. It works based on the piezoelectric
effect, where certain materials, such as lead zirconate titanate (PZT) or
polyvinylidene fluoride (PVDF), convert mechanical vibrations or pressure into
an electrical signal. Piezo plates are widely used in sensing, actuation, and
sound generation applications due to their high sensitivity and fast response.
Specifications
General
Specifications for a 35mm Piezoelectric Sensor/Buzzer/Transducer
Type:
Piezoelectric Buzzer / Sensor / Transducer
Material:
PZT (Lead Zirconate Titanate) or PVDF
(Polyvinylidene Fluoride)
Capacitance:
0.5 µF to 2.0 µF
Resonant Frequency:
2 kHz to 4 kHz for buzzers
Up to 20 kHz for sensors
Operating Voltage:
3V to 24V (DC or AC, depending on the design)
Output Voltage:
Ranges from a few millivolts to several volts,
depending on input
Temperature Range:
-20°C to +70°C
Sensitivity:
Specified in terms of output voltage per unit
pressure or sound level (e.g., mV/Pa)
Power Consumption:
Low power, typically a few milliwatts
Additional
Electrical & Mechanical Properties
Sound Pressure Level (SPL) (for buzzers):
Typically specified in dB at a certain distance
(e.g., 85 dB at 1 meter)
Frequency Response (for sensors):
Operational frequency range, typically 20 Hz to
20 kHz
Impedance:
Ranges from 100 to 600 ohms for buzzers
Mechanical Properties:
Stiffness: Determines the sensor’s mechanical response
Damping Ratio: Defines how quickly the sensor returns to equilibrium
Features
High Sensitivity: Converts even small vibrations into electrical
signals
Wide Frequency Response: Suitable for both low and high-frequency
applications
Low Power Consumption: Ideal for battery-powered devices
Compact & Lightweight: Can be integrated into small devices
Durability & Reliability: Works efficiently under different environmental
conditions
Versatile Applications: Used in sensors, actuators, and sound devices
Applications
Sensors
Vibration and impact sensors in industrial
machinery
Pressure sensors in medical and automotive
applications
Knock and touch sensors in electronic circuits
Actuators
Ultrasonic transducers in medical and industrial
cleaning systems
Precision movement control in micro-positioning
devices
Sound Devices
Buzzers in alarms, timers, and security systems
Ultrasonic sound generators for distance
measurement and object detection