PL-21N30PQ

Overview

The PL-21N30PQ is a piezoelectric audio indicator from the Mallory Sonalert PL series. It operates on a slow pulse tone at 3 kHz with an 80 dB sound pressure level. Rated for 12 VDC nominal voltage, it draws 12 mA current and functions within a 3-28 VDC input range. The device features solder pin termination for through-hole mounting. Its physical dimensions are 24 mm in diameter by 9.5 mm in height.

Feature Summary

• Generates audible alerts using a slow pulse waveform
• Utilizes piezoelectric technology for reliable sound production
• Designed for direct board integration via through-hole pins

Applications

• Electronic equipment status indication
• Audible alert systems
• Industrial control panels

Procurement Notes

Verify the specific suffix against official Mallory Sonalert documentation to confirm electrical characteristics and mechanical fit. Ensure the ordering code matches the required voltage rating and mounting style. Cross-reference datasheets to validate compliance with intended application standards before procurement.

Selection Notes

Select this component when a low-profile, internally driven piezo buzzer is required for panel or board mounting. Consider the 80 dB output and 3 kHz frequency for environments requiring clear but not excessively loud signals. Verify that the 12 mA current draw aligns with the system power budget.

Part Context

This part belongs to the PL series of piezoelectric buzzers manufactured by Mallory Sonalert Products Inc. The series is characterized by compact dimensions and internal drive circuitry, allowing for simple interface with microcontrollers or logic outputs without external drivers.

Replacement Considerations

PL-21N30WQ is a listed variant within the same product family.