SM280604-2

Overview

The SM280604-2 is a dynamic speaker manufactured by DB Unlimited, designed for embedded installation. It features a round shape with a Mylar cone and operates at a frequency of 850 Hz. The component delivers a sound pressure level of 90 dB and has an impedance of 4 Ohms. Its power rating is 200 mW, and it utilizes solder pad termination. The unit measures 28 mm in diameter and 6.4 mm in height, suitable for compact audio applications.

Feature Summary

• Dynamic transducer technology for audio output
• Embedded flush-mount design for space-constrained assemblies
• Mylar cone construction for durability

Applications

• Compact consumer electronics audio modules
• Industrial control panel indicators
• Medical device acoustic signaling

Procurement Notes

Verify the specific datasheet revision to confirm RoHS compliance status and exact dimensional tolerances before integration. Ensure the driving circuit matches the 4 Ohm impedance and 200 mW power handling capabilities. Confirm that the solder pad termination method aligns with the assembly process requirements.

Selection Notes

Select this model when a low-profile, high-efficiency dynamic speaker is required for small enclosures. The 850 Hz resonant frequency makes it suitable for mid-range audio or alert tones rather than full-range music reproduction. Compare against the SM36 series if larger diameter or higher power handling is needed.

Part Context

This component belongs to the SM series of dynamic speakers from DB Unlimited, which specializes in custom and standard audio transducers. The series focuses on providing robust solutions for embedded audio needs across various industries, leveraging decades of acoustic engineering experience.

Replacement Considerations

The SM360508-3 offers similar dynamic technology but with higher power handling (1 W) and different impedance (8 Ohms). Verify electrical compatibility and physical mounting constraints before substitution.