AT-2240-TT-4

Overview

The PUI Audio AT-2240-TT-4 is a waterproof piezo transducer with an IP67 rating, designed for through-hole mounting. It features a nominal resonant frequency of 4 kHz and delivers a sound pressure level (SPL) of 85 dBA at 3 V. The component operates with a current draw of 6 mA and includes a built-in capacitance of 0.026 µF. Physical dimensions are approximately 13.3 mm in height with a 22 mm diameter. It utilizes wire leads or solder pads for connection, ensuring secure installation in various electronic assemblies.

Feature Summary

• IP67-rated waterproof construction for reliable operation in harsh environments
• Externally driven piezoelectric design for flexible signal integration
• Through-hole mounting configuration with wire leads for easy PCB installation

Applications

• Medical equipment requiring water-resistant audio indicators
• Industrial control panels exposed to moisture or cleaning agents
• Security and fire alarm systems needing durable audible alerts

Procurement Notes

Verify the specific datasheet version for exact mechanical tolerances and electrical characteristics before finalizing designs. Confirm that the operating voltage aligns with the 3 V specification to maintain the rated 85 dBA output. Ensure the PCB layout accommodates the through-hole pin spacing and physical footprint. Check for RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this component when a waterproof, externally driven piezo indicator is required. The 4 kHz frequency provides clear audibility, while the IP67 rating ensures durability against water ingress. Consider the 3 V operating voltage and 6 mA current consumption for power budget calculations. The through-hole format suits applications where robust mechanical attachment is prioritized over surface-mount density.

Part Context

This part belongs to PUI Audio's AT series of waterproof transducers. These components are engineered for environments where standard buzzers might fail due to moisture exposure. The series offers various frequencies and sound levels, but the AT-2240-TT-4 specifically targets mid-range acoustic output with high environmental protection. It serves as a direct replacement for non-waterproof indicators in wet conditions.

Replacement Considerations

Direct substitutes must match the 22 mm diameter, 4 kHz resonant frequency, and IP67 rating. Verify that alternative parts support through-hole mounting and similar electrical parameters (3 V, 85 dBA). Ensure the replacement maintains the same lead type and physical dimensions to fit existing enclosures without modification.