PUI Audio 70 dBA Surface External Piezo Buzzer Transducer 2 V Min 4V Max

This piezo buzzer transducer provides an audible alert function for electronic systems, driven by an external signal and intended for surface-mount integration. It is designed for applications requiring a compact, low-profile sound source that fits onto printed circuit boards and operates within typical electronic device environments.

• Operates across a 3500 to 4500 Hz range for clear high-frequency tones
• Functions on 2 to 4V supply for low-voltage system compatibility
• Delivers 70 dBA sound level for perceptible alarm output
• Surface-mount package allows automated PCB assembly
• External-drive configuration enables precise tone control
• Conforms to RoHS and REACH for regulated-material use

• Suitable for alarm modules in automation controllers
• Ideal for status indication in handheld measurement tools
• Used with control panels in electrical distribution equipment
• Can be used for warning signals in Compact mechanical assemblies
• Suitable for audible alerts in consumer electronics with size constraints

The device is rated for continuous operation up to 70 °C, so thermal management of surrounding components is advisable in high-ambient environments.

The surface-mount form factor supports pick-and-place and reflow soldering processes for efficient high-volume production.

An external drive signal must be supplied, the transducer does not include an internal driver and requires appropriate drive circuitry.

The 2mm height reduces enclosure thickness and allows integration into slim devices where vertical space is limited.