CI-22746-000

Overview

The Knowles CI-22746-000 is a balanced armature receiver speaker designed for audio applications. It features a rectangular top port configuration with dimensions of 9.47mm in length and 7.18mm in width. The component operates within a frequency range of 200Hz to 5.5kHz and has an impedance of 120 Ohms. It utilizes solder pad termination for surface mount integration.

Feature Summary

• Balanced armature technology for high-fidelity sound reproduction
• Rectangular form factor with top port design
• Surface mount solder pad termination

Applications

• Hearing aids
• Medical devices
• Industrial communication equipment

Procurement Notes

Verify the specific datasheet version for mechanical tolerances and acoustic performance curves. Confirm that the 120 Ohm impedance matches the target circuit requirements. Ensure the top port orientation aligns with the enclosure design for optimal sound projection. Check for any RoHS compliance documentation if required by regional regulations.

Selection Notes

Select this component when a compact, high-output receiver is needed for space-constrained designs. The 120 Ohm impedance suits specific driver circuits requiring higher load resistance compared to standard low-impedance speakers. Consider the rectangular footprint and top port layout during PCB layout and enclosure molding to ensure proper acoustic coupling and mechanical fit.

Part Context

This part belongs to Knowles' portfolio of precision audio transducers. Balanced armature receivers are commonly used in hearing aids and medical devices due to their efficiency and small size. The CI series typically offers consistent performance across various environmental conditions.

Replacement Considerations

Direct substitutes must match the 120 Ohm impedance, balanced armature type, and similar physical dimensions (approx. 9.5x7.2mm). Verify acoustic output levels and frequency response curves against the original specification to ensure equivalent performance in the final application.