20mm Piezoelectric Element Buzzer with Cable

he 20mm Piezoelectric Element Buzzer is a compact and efficient sound-producing component designed for electronic projects and devices where space is limited. Featuring a ceramic piezo element mounted on a brass disc, this buzzer requires an external AC or PWM signal to generate sound, making it ideal for tone generation and alarm circuits.

Pre-attached cable leads allow for quick and hassle-free connection to microcontrollers such as Arduino or Raspberry Pi. Suitable for DIY electronics, sound experiments, and compact embedded systems.

Technical Specifications

• Type: Passive Piezoelectric Buzzer Disc

• Diameter: 20mm

• Cable Length: Approx. 15cm

• Material: Brass with ceramic piezoelectric film

• Resonant Frequency: ~4.0 – 5.0 kHz

• Operating Voltage: 1V – 25V (3–12V recommended)

• Sound Output: Up to 85 dB @ 12V

• Mounting: Surface mount or adhesive (not included)

• Polarity: Red = Positive (+), Black = Negative (–)

Package Includes

• 1 × 20mm Piezoelectric Element Buzzer with Cable

Applications

• Compact audio signaling systems

• Arduino and embedded microcontroller projects

• Miniature alarm systems

• Sound effects in toys and gadgets

• Vibration and knock sensor designs

• Educational kits and STEM projects