AST1109MLTRQ

Overview

The AST1109MLTRQ is a surface-mount piezoelectric transducer manufactured by Mallory Sonalert. It operates within a voltage range of 1 V to 20 V with a current rating of 1 mA. The device produces a sound pressure level of 73 dB at a resonant frequency of 4.1 kHz. Designed for external drive applications, it features an LCP plastic housing and solder pad termination suitable for SMD/SMT assembly.

Feature Summary

• External drive piezoelectric design requiring no internal DC circuitry
• Surface-mount construction utilizing LCP plastic resin housing
• Solder pad termination optimized for automated PCB assembly

Applications

• Board-mounted audio alerting systems
• Electronic equipment status indicators
• Consumer appliance signaling devices

Procurement Notes

Verify the specific suffix 'TRQ' corresponds to reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure supply chain partners provide valid component traceability records matching the Mallory Sonalert part number specifications.

Selection Notes

Select this component for applications requiring low-profile surface-mount audio indication. The 4.1 kHz frequency and 73 dB output are suitable for general alerting. Verify that the host circuit can provide the necessary external drive signal, as the device lacks integrated driving electronics.

Part Context

This part belongs to the AST series of board-mount transducers from Mallory Sonalert. These components are designed for direct integration into printed circuit boards, offering a compact alternative to through-hole acoustic indicators while maintaining reliable piezoelectric performance standards.

Replacement Considerations

Consult official Mallory Sonalert substitution guides for verified equivalents. Generic buzzer replacements may not match the specific 4.1 kHz frequency or 73 dB acoustic output requirements.