EFM-620

Alarms, Buzzers, And Sirens Overview

The East Electronics EFM-620 is a high-output piezo buzzer designed for through-hole PCB mounting. It operates at a nominal voltage of 9V with a current consumption of 50mA. The device features a resonant frequency of 3.2kHz and delivers a sound pressure level of 90dB measured at a distance of 300cm. The unit has a diameter of 40mm and functions within an operating temperature range of -20°C to +60°C.

Alarms, Buzzers, And Sirens Feature Summary

• Internally driven piezo mechanism providing loud output
• Low current consumption design for efficiency
• High reliability suitable for PCB mounting applications

Alarms, Buzzers, And Sirens Applications

• Industrial control panel indicators
• Home appliance status alerts
• Security system sirens

Alarms, Buzzers, And Sirens Procurement Notes

Verify the specific suffix (e.g., LA) against the datasheet, as variants may differ in acoustic output or electrical characteristics. Confirm that the through-hole PC pin configuration matches the target PCB footprint. Ensure the operating environment stays within the specified -20°C to +60°C temperature range for reliable performance.

Alarms, Buzzers, And Sirens Selection Notes

Select this component when a 9V nominal drive voltage is available and a 3.2kHz tone is required. The 40mm diameter must fit the enclosure constraints. Consider the 50mA current draw relative to the power supply capacity. Verify if the standard 90dB output meets regulatory noise limits for the intended installation location.

Alarms, Buzzers, And Sirens Part Context

This part belongs to the East Electronics EFM-620 series of high-output piezo buzzers. The series is characterized by internally driven piezoelectric elements that simplify circuit design by eliminating the need for external oscillators. These components are widely used in consumer electronics and industrial equipment requiring audible feedback.

Alarms, Buzzers, And Sirens Replacement Considerations

The EFM-620LA is a documented variant within the same product family. Verify if the higher acoustic output of the LA version is acceptable or if the standard EFM-620 specifications are sufficient for the application requirements.