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Small round piezo buzzer silver metal disc two pins 11.90mm diameter 6.53mm height

Adafruit

Adafruit Piezo Buzzer 11.90mm 6.53mm 0.70g

SKU CH-4B7Y-EH41R

Compact piezo buzzer produces loud beeps and alerts from a 3–30 V square-wave signal

  • Product typePrototyping Products
  • Loud alerts from a tiny 11.90mm buzzer
  • Operates on 3-30V peak-to-peak square wave
  • Lightweight at 0.70g for portable projects
  • Optimal 4KHz tone frequency for maximum volume
  • Differential drive option doubles output loudness

Piezo Buzzer for Alerts

This Adafruit piezo buzzer produces beeps, tones and alerts for electronic projects. It measures 11.90mm in diameter and 6.53mm in height, weighing 0.70g. The component is driven by a 3-30V peak-to-peak square wave for audible signalling.

Hobbyists and Prototypers

Suits makers adding audible feedback to microcontroller builds, breadboard experiments or portable devices. Not for buyers who need a self-contained module with onboard driver circuitry. Not for applications requiring voice, music playback or variable amplitude control.

3-30V Square-Wave Drive

The buzzer requires an external 3-30V peak-to-peak square-wave source such as a microcontroller timer output. Loudest output occurs near 4KHz with usable response from 2KHz to 10KHz. Differential drive across both pins doubles the volume.

How it compares

Measured against everything we stock in Engineering Workstations & Dev Kits, at today’s prices. Recalculated every night.

Price $6.99
Cheaper than about 80% of the 170 comparable items (median $11.49).

Specifications

Product
Product typePrototyping Products

Questions about this item

What voltage source do I need to drive this buzzer?

Apply a 3-30V peak-to-peak square wave between one pin and ground.

Can I connect this 11.90mm buzzer to a 5V microcontroller pin directly?

Yes, a 5V logic square wave falls within the 3-30V drive range and will produce audible tones.

How do I confirm the buzzer is operating correctly after wiring?

You should hear clear beeps or tones near 4 KHz when the square wave signal is active.

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