AT-1438-TWT-2-R

Overview

The AT-1438-TWT-2-R is an externally driven piezoelectric transducer manufactured by PUI Audio, Inc. It features a round shape with a 14 mm diameter and board mount installation style using solder pin termination. The component operates at a resonant frequency of 3.8 kHz and delivers a sound pressure level of 80 dBA at 5V measured from 10 cm. Electrical specifications include a maximum voltage rating of 10 V and a current draw of 1 mA. The unit functions within a temperature range of -20°C to +60°C.

Feature Summary

• Externally driven piezoelectric design for audible alerts
• Board mount configuration with solder pin connections
• Compact circular form factor suitable for space-constrained assemblies

Applications

• Appliance status indicators
• Industrial control panel alarms
• Security system notifications

Procurement Notes

Verify the specific suffix against official datasheets to confirm electrical characteristics. Ensure mounting hole dimensions match the PCB layout. Confirm RoHS compliance requirements with the manufacturer prior to finalizing procurement orders.

Selection Notes

Select this component when a low-current, high-efficiency audible indicator is required. The 1 mA draw suits battery-operated devices. Verify that the 3.8 kHz resonance aligns with the driving circuit capabilities for optimal acoustic output.

Part Context

This part belongs to the AT series of piezo transducers from PUI Audio. The series offers various diameters and frequencies. The AT-1438 variant specifically provides a balance between size and acoustic performance for standard alerting applications.

Replacement Considerations

Check cross-reference lists for identical 14mm, 3.8kHz piezo transducers. Ensure replacement parts match the 10V max rating and 1mA current specification to maintain circuit integrity.