Unique-Bargains
Unique-Bargains 12mm Piezo Buzzer 3V/5V 10pcs
Pack of ten 12 mm piezo buzzers with built-in drive circuit for 3 V or 5 V operation
- Continuous sound output with built-in drive circuit
- Compact 12mm diameter fits tight panel spaces
- Wide 3V to 5V supply range for flexible power
- 6mm terminal spacing simplifies PCB layout
- Pack of 10 units covers multiple project needs
Pack of ten 12 mm piezo buzzers
This pack contains ten panel-mounting piezo buzzers designed for direct operation from a 3 V or 5 V power supply. Each unit integrates a complete drive circuit so no external driver is required. The buzzers produce a continuous tone suitable for alarm or indicator functions. They are sold new and ready for PCB or panel installation.
Operating voltage range and sound output
The devices operate from any supply between 3 V and 5 V, giving headroom for typical logic-level rails. At 5 V the output is louder, while at 3 V the tone remains audible but softer. There is no volume control; the sound level is fixed by the applied voltage. The continuous tone cannot be modulated without an external switching circuit.
Physical dimensions and mounting
Each buzzer measures 12 mm in diameter and 9.5 mm in height excluding terminals. Terminal spacing is 7.6 mm with a tolerance of 0.5 mm, allowing standard pitch connectors or direct soldering. The plastic and metal housing is compact enough for dense PCB layouts. No thermal or noise concerns arise because the device draws minimal current and has no moving parts.
Highlights
- Continuous sound output with built-in drive circuit
- Compact 12mm diameter fits tight panel spaces
- Wide 3V to 5V supply range for flexible power
- 6mm terminal spacing simplifies PCB layout
- Pack of 10 units covers multiple project needs
Specifications
| Brand | Unique Bargains |
|---|
Questions about this item
Will the 7.6 mm terminal spacing on these 12 mm buzzers fit the holes on my existing PCB panel?
The terminals are spaced 7.6 mm apart with a tolerance of ±0.5 mm, so measure your board’s hole centres to confirm alignment before soldering.
How can I verify each piezo buzzer is working correctly after I mount it?
Apply 3 V or 5 V across the two terminals; a continuous tone should sound immediately if the internal drive circuit is functioning.
Does the pack of 10 include any mounting hardware or wires, or must I source them separately?
Only the 10 bare buzzers are supplied; mounting hardware and connection wires are not included and must be obtained separately.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
