22 mm Piezo Disc Element, Passive Buzzer Plate, Acoustic Sensor Transducer

The 22 mm Piezo Disc Element is a versatile and compact passive buzzer plate designed for use in both sound generation and acoustic sensing applications. Made with a ceramic piezoelectric material bonded to a brass disc, it vibrates to produce sound when electrical signals are applied and can also detect vibrations or pressure changes when used as a sensor. Ideal for electronics projects, educational kits, and embedded systems, this component is widely used in alarms, buzzers, beepers, and ultrasonic applications. Its passive nature allows you to drive it with your own oscillator or microcontroller to control sound output, giving greater flexibility in tone customization and power usage.

Key Features:

• 22 mm diameter, compact and easy to mount
• Passive element – requires external frequency source for operation
• Converts electrical signals to audible tones or detects vibrations
• Suitable for buzzers, alarms, acoustic sensors, and touch detection
• High sensitivity and reliability with long lifespan
• Brass and ceramic construction ensures good resonance and durability