PL-21N31PQ

Overview

The PL-21N31PQ is a piezoelectric audio indicator from the Mallory Sonalert PL series. It operates on a 12 VDC nominal voltage with a current draw of 12 mA. The device produces an 80 dB sound pressure level at a frequency of 3 kHz in a slow pulse tone. It features solder pin termination for through-hole mounting and has physical dimensions of 24 mm diameter by 13.5 mm height.

Feature Summary

• Generates a slow pulse acoustic signal using piezoelectric technology
• Designed for direct through-hole board mounting via solder pins
• Provides high-intensity audible alerts suitable for panel integration

Applications

• Industrial control panel status indication
• Consumer appliance operational alerts
• Medical equipment auditory signaling

Procurement Notes

Verify the specific suffix codes against the official Mallory Sonalert datasheet to confirm electrical ratings and acoustic characteristics. Ensure the ordering part number matches the required voltage, tone type, and mounting style specifications for the target application design.

Selection Notes

Select this component when a low-profile, board-mounted piezoelectric buzzer is required. The PL series offers a balance of acoustic output and compact form factor. Consider the 12 VDC operating requirement and through-hole assembly constraints during the circuit layout phase.

Part Context

This unit belongs to the PL series of audio indicators manufactured by Mallory Sonalert Products Inc. The series is characterized by compact piezoelectric designs intended for PCB integration. Mallory Sonalert is a recognized provider of audio and visual warning devices for industrial and consumer markets.

FAQ

What is the acoustic tone pattern of the PL-21N31PQ?

The device emits a slow pulse tone.

How is the PL-21N31PQ mounted to a circuit board?

It uses solder pin termination for through-hole installation.