Piezo Buzzer and Vibration Sensor
The Piezo Vibration Sensor is a compact piezoelectric sensor designed to detect mechanical vibrations and knocks. When subjected to physical stress, such as tapping or knocking, the piezoelectric material generates a voltage signal proportional to the force applied. This makes it ideal for applications requiring impact detection, vibration monitoring, or as a simple input device in interactive projects.
Additionally, when an AC voltage is applied, the element can function as a buzzer, producing audible tones. Its dual functionality allows for both sensing and sound generation, making it a versatile component in electronic designs.
Features :
- Detects mechanical vibrations and knocks through the piezoelectric effect.
- Generates voltage signals proportional to applied force.
- Can function as a buzzer when driven with an AC voltage.
- Compact and lightweight design for easy integration.
- Suitable for both sensing and sound-generating applications.
- Pre-soldered leads.
Specifications:
| Specification | Details |
|---|---|
| Diameters | 12/15/18/20/27/35/50 mm |
| Thickness | Approximately 0.45mm |
| Resonant Frequency | 4.2kHz to 4.6kHz |
| Operating Voltage (as buzzer) | Typically 3V–24V |
| Maximum Input Voltage | Up to 30V |
| Operating Temperature | -20°C to +70°C |
| Lead Wire Length | Approximately 50mm |
| Diameter | Resonant Frequency | Capacitance (@1kHz) | Impedance (MAX.) | Typical Applications |
|---|---|---|---|---|
| 12mm | 9.0±1.0kHz | 8±30%nF | 1kΩ | Compact devices, touch-sensitive interfaces |
| 15mm | 6.0±1.0kHz | 10±30%nF | 800Ω | Small alarms, portable electronics |
| 18mm | 4.3±0.5kHz | 25±30%nF | 300Ω | Medium vibration sensors, compact buzzers |
| 20mm | 6.3±0.6kHz | 10±30%nF | 1kΩ | General-purpose vibration sensing, small buzzers |
| 27mm | 4.6±0.5kHz | 20±30%nF | 300Ω | Knock sensors, medium-sized buzzers |
| 35mm | 2.8±0.5kHz | 30±30%nF | 200Ω | Drum triggers, large-area vibration detection |
| 50mm | 2.8±0.5kHz | 35±30%nF | 300Ω | Industrial alarms, high-sensitivity vibration monitoring |
Package Contents:
- 1x Piezo Buzzer and Vibration Sensor (with wires soldered)
Documents:
- Piezoelectric Sound Components Datasheet
- Example Arduino project
- Piezo Buzzer Element 50mm
- Piezo Buzzer Element 18mm
- Certification
NOTE: in the datasheet, look for the External Drive Type in 7BB series (page 7).