2403 260 00087

Overview

The Knowles 2403 260 00087 is a dynamic receiver speaker designed for audio output applications. It features a nominal impedance of 32 Ohms and a maximum power handling capacity of 20 mW. The frequency response range spans from 160 Hz to 6.5 kHz, providing suitable performance for voice and limited-bandwidth audio signals. The unit utilizes a top rectangular port configuration with a sensitivity rating of 71 dB. This component is part of the 2403 series, engineered for integration into compact electronic devices requiring reliable acoustic transduction.

Feature Summary

• Dynamic transducer technology optimized for receiver applications
• Top rectangular port design for directional sound projection
• Compact form factor suitable for space-constrained assemblies

Applications

• Portable communication devices
• Medical equipment audio outputs
• Industrial control panel indicators

Procurement Notes

Verify the specific suffix and revision code against the manufacturer's latest datasheet to ensure compatibility with current production standards. Confirm mechanical dimensions and terminal configurations match the target PCB layout. Check for RoHS compliance status if required by regional regulations. Ensure storage conditions adhere to moisture sensitivity levels specified in the packaging documentation to prevent degradation prior to assembly.

Selection Notes

Select this component when a 32-ohm impedance matches the amplifier output stage. Consider the 20 mW power limit to avoid thermal damage during operation. Evaluate the 160 Hz to 6.5 kHz frequency range against the required audio bandwidth. The top port orientation must align with the enclosure acoustic path. Verify that the physical size fits within the designated cavity constraints.

Part Context

This model belongs to the Knowles 2403 series of dynamic speakers. The series is characterized by miniature receivers intended for portable electronics. These components are manufactured using established ceramic and magnetic materials to ensure consistent acoustic performance. The 2403 series provides a standardized footprint for designers integrating audio solutions into handheld or wearable devices.

Replacement Considerations

Consult official substitution lists for direct equivalents. Verify impedance, power rating, and dimensional tolerances before swapping. Cross-reference mounting hole patterns and terminal types to ensure mechanical fit without modification.