PT-2742FPQ

Overview

The PT-2742FPQ is an externally driven piezoelectric transducer manufactured by Mallory Sonalert Products Inc. It features a resonant frequency of 4200 ± 500 Hz and operates at a maximum voltage of 12 V with a current rating of 8 mA. The device produces a sound pressure level of 90 dB @ 12V, 30cm. It utilizes through-hole PC pin termination for panel or board mounting.

Feature Summary

• Externally driven piezoelectric design requiring external oscillator circuitry
• Dual-tone acoustic output capability
• Robust construction suitable for industrial environments

Applications

• Industrial machinery status indicators
• Control panel alarm systems
• Electronic equipment audio signaling

Procurement Notes

Verify the specific suffix 'FPQ' against the official Mallory Sonalert datasheet to confirm terminal type and packaging configuration. Ensure the application circuit provides the necessary external drive signal, as this component is not self-exciting. Confirm RoHS compliance status for the specific manufacturing batch prior to integration.

Selection Notes

Select this model when an external driver IC or microcontroller is available to generate the required 4.2 kHz signal. It is unsuitable for direct DC voltage connection without additional driving electronics. Compare dimensions and mounting requirements against the enclosure design to ensure proper fit for through-hole installation.

Part Context

This component belongs to the Mallory Sonalert piezoelectric transducer family, known for high reliability in audible warning applications. The brand has a long history in industrial and medical alerting devices. This specific part represents their standard externally driven solution for custom audio signaling needs.

Replacement Considerations

Consult Mallory Sonalert's official cross-reference sheet for verified substitutes. Direct replacements may include other externally driven piezo elements from the same manufacturer with matching frequency and voltage ratings.