SMT-2240-TW-2-R

Alarms, Buzzers, And Sirens Overview

The SMT-2240-TW-2-R is a surface-mount electromagnetic transducer manufactured by PUI Audio. It features a resonant frequency of 4 kHz and produces a sound pressure level of 90 dBA. The device operates within a voltage range of 1V p-p to 30V p-p, with a maximum supply voltage of 30V. Key electrical parameters include a capacitance of 0.019 µF (19000 pF) and a maximum operating current of 0 mA as listed in some sources, though typically defined by impedance. The component is designed for external driving applications.

Alarms, Buzzers, And Sirens Feature Summary

• Surface mount installation style for automated PCB assembly
• Electromagnetic transduction mechanism for acoustic output
• External drive capability requiring no internal oscillator

Alarms, Buzzers, And Sirens Applications

• Alarm systems requiring audible tone generation
• Buzzer circuits for status indication
• Sirens and warning devices

Alarms, Buzzers, And Sirens Procurement Notes

Verify the specific datasheet version from PUI Audio to confirm exact impedance and current draw specifications, as listed values may vary between distributor summaries and official documentation. Ensure the surface mount footprint matches the design layout. Confirm RoHS compliance status if required for the target market regulations.

Alarms, Buzzers, And Sirens Selection Notes

Select this component when a 4 kHz resonant frequency is required for audible alerts. The surface mount package suits high-volume manufacturing processes. Consider the 90 dBA output level against ambient noise requirements. Verify that the driving circuit can provide the necessary peak-to-peak voltage without exceeding the 30V limit.

Alarms, Buzzers, And Sirens Part Context

This part belongs to PUI Audio's SMT series of electromagnetic transducers. These components are distinct from piezoelectric types and active buzzers, relying on external AC signals for operation. The series offers various frequencies and mounting styles to suit different enclosure and performance constraints.

Alarms, Buzzers, And Sirens Replacement Considerations

No public confirmed substitute part numbers are available in the provided data. Cross-reference with other 4 kHz surface mount electromagnetic transducers only after verifying mechanical dimensions and electrical characteristics against the official PUI Audio datasheet.