PF-27A25PSQ

Overview

The PF-27A25PSQ is an externally driven piezoelectric buzzer manufactured by Mallory Sonalert Products Inc. It operates on a DC input voltage range of 4V to 24V and draws a current of 15mA. The device produces a sound pressure level of 95dB at a frequency of 2.5kHz. Its physical dimensions are 30mm in length and 16mm in width, designed for board mounting applications.

Feature Summary

• Externally driven piezoelectric technology for audible alerts
• Wide operating voltage range supporting 4VDC to 24VDC inputs
• High acoustic output capability with 95dB sound pressure level
• Compact board-mount form factor suitable for space-constrained designs

Applications

• Electronic equipment audible alerts
• Alarm systems signal indication
• General purpose audio signaling devices

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct electrical and mechanical specifications. Confirm that the external drive circuitry matches the component's 15mA current requirement and 4V-24V input range. Ensure compatibility with the intended PCB layout for the 30mm x 16mm footprint before finalizing procurement orders.

Selection Notes

Select this component when an externally driven solution is required rather than an internally driven buzzer. It is appropriate for designs needing a wide voltage tolerance between 4V and 24V. Consider the 95dB output level for environments requiring high audibility. Verify that the board-mount style fits the assembly constraints compared to panel or bracket mount alternatives.

Part Context

This part belongs to the Mallory Sonalert family of piezoelectric transducers. It is categorized under audio special purpose indicators. The device utilizes piezoelectric technology to convert electrical signals into audible sound waves for user notification purposes.

FAQ

Is the PF-27A25PSQ internally or externally driven?

The PF-27A25PSQ is an externally driven piezo buzzer, requiring an external oscillator circuit to generate the driving signal.

What is the operating voltage range for this buzzer?

The component operates within a DC voltage range of 4V to 24V.