CI-28220-000

Overview

The Knowles CI-28220-000 is a balanced armature receiver speaker designed for compact audio applications. It features a rectangular top port configuration and operates within a frequency range of 200 Hz to 5.5 kHz. The device has an impedance of 47 Ohms and delivers a sound pressure level of 131.5 dB. This component utilizes a balanced armature transducer mechanism, suitable for high-output audio requirements in space-constrained electronic devices.

Feature Summary

• Balanced armature transducer technology
• Rectangular top port design
• High sound pressure level output

Applications

• Compact hearing aids
• Medical diagnostic equipment
• Industrial communication headsets

Procurement Notes

Verify the specific acoustic performance against application requirements. Confirm mechanical dimensions fit the enclosure design. Ensure the 47 Ohm impedance matches the driver circuitry. Check RoHS compliance status if required by project specifications.

Selection Notes

Select this model when high output volume is critical in small form factors. Consider the 200 Hz to 5.5 kHz frequency response limits. Evaluate the top port orientation for acoustic coupling. Compare with other balanced armature options for size constraints.

Part Context

This part belongs to the Knowles speakers and transducers category. It is a specialized audio component distinct from general-purpose loudspeakers. The product line focuses on miniaturized acoustic solutions for professional and medical markets.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.