AT-1820-TWT-1V-R

Overview

The PUI Audio AT-1820-TWT-1V-R is a through-hole audio transducer designed for audible signaling applications. It operates at a resonant frequency of 1820 Hz and delivers a sound pressure level of 95 dB when driven by a 1 Vrms signal at a distance of 10 cm. The component features a wide operating voltage range, supporting both DC and AC drive signals up to 30 Vrms or 60 Vdc. With an impedance of approximately 16 ohms at resonance, it is suitable for direct interfacing with standard logic or driver circuits without requiring complex matching networks.

Feature Summary

• High acoustic output efficiency providing clear audible alerts in noisy environments
• Robust construction capable of withstanding continuous operation under specified electrical limits
• Through-hole mounting configuration ensures secure mechanical attachment to printed circuit boards

Applications

• Industrial control panel status indicators
• Medical equipment alarm systems
• Consumer appliance notification signals

Procurement Notes

Verify the specific suffix codes against the manufacturer's current datasheet to ensure compatibility with required drive voltages and mounting styles. Confirm that the lead-free status meets environmental compliance standards for your region. Check for any recent revisions to the mechanical drawings to ensure board layout compatibility.

Selection Notes

Select this component when a high-decibel audible warning is required from a compact form factor. Ensure the driving circuit can supply sufficient current to maintain the specified sound pressure level without distortion. Consider thermal management if the device will be operated continuously at maximum voltage ratings.

Part Context

This model belongs to PUI Audio's series of piezoelectric buzzers designed for general-purpose audible signaling. The series offers various frequencies and mounting options to suit different enclosure constraints. This specific variant focuses on mid-range frequency performance for optimal human hearing sensitivity.

FAQ

Can this transducer be driven directly by a microcontroller GPIO pin?

No, the impedance and power requirements typically necessitate a driver transistor or amplifier stage to achieve the rated 95 dB output.

What is the maximum continuous DC voltage allowed?

The component supports up to 60 Vdc for continuous operation, but driving at this level may exceed the rated sound pressure specifications.