EFM-390BA

Alarms, Buzzers, And Sirens Overview

The EFM-390BA is a self-driven piezo transducer buzzer manufactured by East Electronics. It operates at a nominal voltage of 12 VDC with a current consumption of 12 mA. The device produces a sound pressure level of 90 dB at a distance of 10 cm and features a resonant frequency of 3.8 kHz. It utilizes through-hole PC pins for mounting and has a diameter of 24 mm. The operating temperature range spans from -20°C to +70°C.

Alarms, Buzzers, And Sirens Feature Summary

• Self-driven piezoelectric design requiring no external oscillator circuitry
• High acoustic output capability for clear audio signaling
• Through-hole mounting configuration for standard PCB integration

Alarms, Buzzers, And Sirens Applications

• General purpose alarm systems
• Industrial equipment status indicators
• Consumer appliance auditory feedback

Alarms, Buzzers, And Sirens Procurement Notes

Verify the specific ordering suffix matches the required electrical characteristics, as variations may exist within the product line. Confirm RoHS compliance status if environmental regulations apply to your assembly process. Ensure the through-hole pin spacing aligns with your printed circuit board layout specifications before finalizing procurement orders.

Alarms, Buzzers, And Sirens Selection Notes

Select this component when a simple, cost-effective audible alert is required without complex driver circuits. The 12 VDC rating suits systems powered by standard logic or power rails. Consider the 90 dB output level against ambient noise requirements. The 24 mm diameter dictates available panel or enclosure space constraints for installation.

Alarms, Buzzers, And Sirens Part Context

This part belongs to the EFM series of self-driven piezo buzzers from East Electronics. These components are designed for high-volume applications where reliable, low-cost auditory signaling is necessary. The series typically offers various voltage and frequency options to suit different system architectures and acoustic needs.

Alarms, Buzzers, And Sirens Replacement Considerations

Cross-reference with other 12 V, 3.8 kHz, 24 mm through-hole piezo buzzers. Verify mechanical dimensions and pin compatibility before substitution. Check datasheets for equivalent sound pressure levels and drive voltage requirements to ensure functional parity in the target application.