If you want to add beeps, tones or alerts to your Raspberry Pi project, you require a Piezo Buzzer! This mini transducer is small but loud, and can be driven with a 1-20V peak-to-peak square wave. To use, connect one pin to ground (either one) and the other pin to a square wave out from a timer or microcontroller. For the loudest tones, stay around 4 KHz. For extra loudness, you can connect both pins to a microcontroller and swap which pin is high or low (‘differential drive’) for double the volume.

This one plops perfectly into a breadboard and has short legs, so can also easily be mounted on a PCB!

Please Note. This item is externally driven, e.g. requires a microcontroller to produce a tone.

This Mini Piezo Transducer Features:

• Mini 5V Piezo Transducer
• PCB & Breadboard Mountable
• Low Power Consumption
• Sealed Base
• Wave Solderable and Washable

Technical Specification

• Rated Voltage (Vp-p Square Wave) 5Vp-p
• Operating Voltage 1 to 20Vp-p
• Rated Current at Rated Voltage 1mA
• Sound Output at 4000Hz at 10cm, at Rated Voltage ?80dB
• Resonant Frequency 4000 500Hz
• Operating Temperature -20 to +70C
• Storage Temperature -30 to +80C
• External Diameter: 13.8mm
• External Height: 6.8mm
• Capacitance: 0.013F
• Capacitance Max: 16.9nF
• Weight: 1g
• Model No.: ABT-402-RC