AST0940MCQ

Overview

The AST0940MCQ is a surface-mount piezoelectric transducer manufactured by Mallory Sonalert Products Inc. It operates within a voltage range of 1V to 25V AC/DC and draws a supply current of 5mA. The device produces a single-tone signal at a frequency of 4kHz with a sound pressure level of 78dB. Its physical dimensions are 9.5mm x 9.0mm x 1.9mm, featuring side port location and SMD/SMT termination for board mounting.

Feature Summary

• Piezoelectric technology for reliable acoustic output
• Surface-mount design suitable for automated assembly
• Internal drive circuitry for simplified integration
• Single-tone operation mode

Applications

• Industrial control panel alarms
• Medical device status indicators
• Consumer electronics audio alerts
• Transportation system notifications

Procurement Notes

Verify the specific ordering suffix and package type against the manufacturer's official datasheet to ensure compatibility with your PCB layout. Confirm RoHS compliance status and moisture sensitivity levels prior to procurement. Cross-reference the terminal configuration and mounting orientation requirements with your assembly specifications to prevent installation errors during production.

Selection Notes

Select this component when a compact surface-mount solution is required for audible signaling in space-constrained designs. Ensure the operating voltage aligns with the 1V to 25V range and that the 4kHz frequency meets the auditory detection requirements of the target application. Consider the 78dB SPL for adequate volume relative to ambient noise levels.

Part Context

This part belongs to the AST series of surface-mount transducers from Mallory Sonalert. The series offers various sound pressure levels and frequencies, designed for modern electronic manufacturing processes. It represents a shift towards smaller form factors while maintaining industrial-grade reliability for critical alerting functions.

Replacement Considerations

Consult official Mallory Sonalert documentation for direct cross-references. Verify dimensional tolerances and electrical characteristics of potential substitutes to ensure functional equivalence without redesigning the host circuit or mechanical enclosure.