28SL3120LFPN

Overview

The DB Products 28SL3120LFPN is an internally driven piezoelectric indicator buzzer designed for through-hole mounting. It operates on a DC input with a nominal voltage of 12 V and draws 12 mA of current. The device generates an acoustic output at a frequency of 2.8 kHz, achieving a sound pressure level of 100 dB when measured at a distance of 12 inches (30 cm). The operational voltage range extends from 3 V to 20 V, providing flexibility in power supply configurations while maintaining consistent performance characteristics for alarm and signaling applications.

Feature Summary

• Internally driven piezoelectric design eliminates the need for external oscillators
• Through-hole PC pin construction facilitates standard PCB integration
• Wide operating voltage range supports diverse power supply environments

Applications

• Electronic equipment status indication
• Alarm systems requiring audible alerts
• Industrial control panel signaling

Procurement Notes

Verify the complete part number including suffixes to ensure correct mounting style and acoustic specifications. Confirm that the required sound pressure level and frequency match the application's audibility requirements. Ensure the PCB layout accommodates the through-hole pin spacing and physical dimensions specified in the official datasheet to prevent mechanical stress or electrical misalignment during assembly.

Selection Notes

Select this component when an internally driven solution is preferred to reduce circuit complexity. The 12 V nominal rating suits standard logic-level power rails. Consider the 100 dB output level for environments requiring high audibility. Verify that the 2.8 kHz frequency does not conflict with other acoustic sources in the enclosure. Ensure the through-hole package fits the target board's mechanical constraints.

Part Context

DB Products Limited specializes in acoustic components, manufacturing buzzers, piezo elements, and microphones since 1976. The 28SL3120LFPN belongs to their line of internally driven piezoelectric indicators. These components are engineered for reliability in industrial and commercial signaling applications, leveraging decades of expertise in acoustic transducer design and manufacturing.

Replacement Considerations

Consult official substitution guides for compatible alternatives. Verify that any replacement matches the 12 V nominal voltage, 2.8 kHz frequency, and 100 dB sound pressure level. Ensure the substitute component maintains the same through-hole pin configuration and internal drive architecture to preserve circuit functionality without modification.