AT-1440-TT-R

Overview

The AT-1440-TT-R is an externally driven piezoelectric transducer manufactured by PUI Audio, Inc. It operates at a self-resonant frequency of 4 kHz and produces a sound pressure level of 80 dBA when driven at its rated voltage. The component features a round design with a diameter of 13.8 mm and a height of 7.5 mm. It utilizes through-hole mounting with solder pin termination for secure PCB integration. Electrical specifications include a maximum current draw of 3 mA at the rated voltage of 5 Vp-p, with an operating voltage range spanning from 1 to 20 Vp-p.

Feature Summary

• Externally driven piezoelectric construction for reliable acoustic output
• Through-hole solder pin termination for standard PCB mounting
• Compact circular form factor suitable for space-constrained enclosures

Applications

• General purpose audio indicators in consumer electronics
• Status alerts in industrial control panels
• Audible feedback mechanisms in medical devices

Procurement Notes

Verify that the required acoustic output meets the 80 dBA specification at 5 Vp-p for your specific application environment. Confirm mechanical compatibility with the 13.8 mm diameter and 7.5 mm height constraints. Ensure the driving circuit can supply the necessary voltage within the 1 to 20 Vp-p operating range without exceeding the 3 mA maximum current limit. Check RoHS compliance requirements against your manufacturing standards.

Selection Notes

Select this component when a simple, cost-effective audible alert is needed without integrated driver circuits. It is appropriate for designs where the host microcontroller or logic circuit provides the drive signal. Consider the 4 kHz resonant frequency for optimal efficiency. Compare against other PUI Audio buzzers if higher sound pressure levels or different frequencies are required.

Part Context

This part belongs to PUI Audio's line of externally driven piezo transducers. These components are distinct from self-excited buzzers as they require an external AC signal to generate sound. The product family includes various diameters and frequencies to suit different acoustic needs across appliance, security, and industrial sectors.

Replacement Considerations

Direct substitutes must match the 4 kHz frequency, 13.8 mm diameter, and through-hole pin configuration. Verify that alternative parts support the same 5 Vp-p rated voltage and similar sound pressure levels. Cross-reference mechanical drawings to ensure footprint compatibility.