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Black circular piezo element with mounting holes and thin wires attached

Adafruit

Adafruit Large Enclosed Piezo Element 30mm w/ Wires

SKU CH-C943-6MH93

A 30 mm enclosed piezo element with mounting holes converts vibration to voltage or voltage to vibration for buzzers or knock sensors, rated to 12 Vpp

  • TypeEngineering Development Tools
  • Large 30mm diameter produces strong output up to 85dB
  • Mounting holes allow secure attachment to panels or enclosures
  • Converts vibration to voltage for knock or impact sensing
  • Converts voltage to vibration for audible alerts and tones
  • Operates from 3V or 5V logic up to 12Vpp drive

30mm Enclosed Piezo Element

This 30mm diameter piezo element is enclosed with mounting holes for easy attachment. It converts vibration to voltage or voltage to vibration, functioning as both a buzzer for tones and alerts and a sensor for detecting fast movements like knocks. The unit is rated for up to 12Vpp use and operates with 3 or 5V square waves.

Installation and Common Issues

The element includes thin pre-attached wires that plug into a solderless breadboard but may be too thin for direct insertion into Arduino socket headers. Mounting holes with a 4mm width allow secure mechanical fastening using screws or bolts. No soldering is required for basic breadboard prototyping.

Compatibility Checks

Verify your drive circuit can supply a 1-30Vp-p square wave within the 3.5mA maximum current rating. Confirm the operating temperature range of -20 to +60°C suits the installation environment. Ensure the resonant frequency bands at 1300Hz ±500 and 4000Hz ±500 match the intended audio or sensing application.

Highlights

  • Large 30mm diameter produces strong output up to 85dB
  • Mounting holes allow secure attachment to panels or enclosures
  • Converts vibration to voltage for knock or impact sensing
  • Converts voltage to vibration for audible alerts and tones
  • Operates from 3V or 5V logic up to 12Vpp drive

Specifications

TypeEngineering Development Tools

Questions about this item

How do I verify the piezo element is functioning correctly after wiring it?

Apply a 3V or 5V square wave and listen for a clear tone near the 1300Hz resonant frequency; sound output should reach about 85db at ten centimetres.

What does the package contain and what extra items are needed?

The element arrives with thin pre-attached wires and 4mm mounting holes; you will need a breadboard or soldering equipment and a driver circuit to supply the square wave.

Which voltage version should I select for my project?

The single model operates from 1 to 30Vp-p and is rated up to 12Vp-p, so choose it for 3V, 5V or 12V square-wave drive — no separate voltage variants exist.

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