PFD-21N30WQ

Overview

The PFD-21N30WQ is a piezoelectric audio indicator from the Mallory Sonalert PLD series. It operates on a 3-28 VDC supply with a nominal rating of 12 VDC and draws 12 mA. The device produces an 80 dBA sound level at a frequency of 3 kHz in a constant or fast pulse tone. It features wire lead termination and flush mounting dimensions of 24 mm x 24 mm x 9.5 mm.

Feature Summary

• Piezoelectric construction for reliable audible signaling
• Wide operating voltage range supporting 3-28 VDC applications
• Compact flush-mount design suitable for panel integration

Applications

• Industrial control panels
• Automotive instrumentation
• Medical equipment alarms

Procurement Notes

Verify the specific suffix against official Mallory Sonalert documentation to confirm exact electrical characteristics and mechanical tolerances. Ensure the wire lead configuration matches the target assembly requirements. Confirm RoHS compliance status through the manufacturer's current product declaration before finalizing procurement specifications.

Selection Notes

Select this component when a compact, low-current piezoelectric buzzer is required for panel-mounted applications. The 80 dBA output provides clear indication without excessive noise pollution. Verify that the 12 mA current draw aligns with the available drive circuit capacity and that the 3-28 VDC range covers the system's operational voltage profile.

Part Context

This part belongs to the Mallory Sonalert PLD series of industrial-grade audio indicators. The series is designed for robust performance in demanding environments. The PFD variant specifically denotes a piezoelectric element with wire leads, distinguishing it from solder pin or screw terminal alternatives within the same form factor family.

Replacement Considerations

PLD-21N30WQ