SM400204-1

Overview

The SM400204-1 is a general-purpose dynamic speaker manufactured by DB Unlimited. It features a circular shape with a top port configuration and solder eyelet terminals for panel mounting. The unit operates at an impedance of 4 Ohms with a maximum power handling of 3 Watts. Its frequency range spans from 220 Hz to 20 kHz, delivering a sound pressure level of 99 dBA at 10 cm. The cone utilizes PU and aluminum materials, housed in a compact design suitable for various audio applications.

Feature Summary

• Top port configuration for directed sound output
• Solder eyelet terminals for secure panel mounting
• PU and aluminum cone material construction

Applications

• General purpose audio devices
• Panel mounted speaker systems
• Consumer electronics audio output

Procurement Notes

Verify the specific datasheet version for the SM400204-1 to confirm current manufacturing status and detailed electrical tolerances. Ensure compatibility with the target enclosure dimensions, as the physical footprint must accommodate the 4 Ohm impedance and 3W power rating requirements. Cross-reference terminal specifications to confirm solder eyelet suitability for the intended assembly process.

Selection Notes

Select this component when a general-purpose dynamic speaker with high sensitivity (99 dBA) is required. The 4 Ohm impedance matches standard low-voltage audio circuits. Consider the top port design if directional sound projection is necessary. Verify that the operating environment falls within the specified thermal limits for the cone materials.

Part Context

This part belongs to the DB Unlimited speaker portfolio, categorized under audio devices and transducers. It serves as a standard solution for applications requiring reliable acoustic performance without specialized waterproofing or high-power micro-speaker constraints. The model represents a balance between size, output level, and cost-effectiveness for mass-produced electronic goods.

Replacement Considerations

Direct substitutes require matching 4 Ohm impedance, similar frequency response (220 Hz - 20 kHz), and compatible mounting style. Verify that replacement units maintain the 99 dBA SPL rating and support the 3W power handling capability to ensure equivalent acoustic performance.