EFM-250

Alarms, Buzzers, And Sirens Overview

The EFM-250 is a sealed piezoelectric buzzer manufactured by East Electronics, designed for through-hole mounting with a diameter of 14.1mm. It features an active driver circuitry, allowing it to be internally driven by DC signals. The component operates within a voltage range of 6V to 16V, with a rated voltage of 12V and a resonant frequency of 4kHz. It exhibits low current consumption and supports wave soldering processes. The operational temperature range spans from -40°C to +85°C, ensuring reliability in various environmental conditions.

Alarms, Buzzers, And Sirens Feature Summary

• Sealed construction suitable for wave soldering and washable applications
• Active internal driver circuitry for direct DC input
• Low current consumption design
• Wide operating temperature range

Alarms, Buzzers, And Sirens Applications

• General purpose alarm systems
• Indicator circuits in consumer electronics
• Industrial control panel signaling
• Automotive interior warning devices

Alarms, Buzzers, And Sirens Procurement Notes

Verify the specific suffix variant (e.g., D, DN) against project requirements, as passive and active versions differ significantly in driver circuitry. Confirm voltage ratings match the target system's supply rails. Ensure mechanical dimensions align with enclosure cutouts. Check RoHS compliance status if required by regional regulations. Validate supplier authenticity through authorized channels.

Alarms, Buzzers, And Sirens Selection Notes

Choose this model when an active buzzer with built-in driving circuitry is required for simple DC triggering. The 12V rated voltage suits standard logic-level interfaces. Consider the 14.1mm diameter for space-constrained PCB layouts. The wide temperature range makes it suitable for harsh environments. Compare sound pressure levels if acoustic output is critical.

Alarms, Buzzers, And Sirens Part Context

This component belongs to East Electronics' line of piezoelectric buzzers, categorized under alarms, buzzers, and sirens. It serves as a compact acoustic signaling device for electronic assemblies. The series includes variants like EFM-250D and EFM-250DN, which may differ in drive type or electrical specifications. It is commonly used in industrial and consumer applications requiring reliable audible alerts.

Alarms, Buzzers, And Sirens Replacement Considerations

Direct substitutes include other 14mm active piezo buzzers with 12V rating and 4kHz frequency. Verify pin compatibility and mounting hole patterns. Cross-reference datasheets for identical voltage ranges and temperature specs. Ensure replacement parts maintain the same sealing characteristics for wave soldering compatibility.