CI-28434-000

Overview

The Knowles CI-28434-000 is a balanced armature speaker transducer designed for audio applications. It features a rectangular form factor with side porting and operates within a frequency range of 200 Hz to 5.5 kHz. The device has an impedance of 69 Ohms and delivers a sound pressure level of 128 dB. Physical dimensions include a height of 4.19 mm, width of 7.18 mm, and depth of 9.47 mm. It is classified as an electromagnetic speaker component.

Feature Summary

• Balanced armature transducer technology
• Side port acoustic design
• High sensitivity output

Applications

• Hearing aids
• Bone conduction devices
• Medical audio equipment

Procurement Notes

Verify the specific acoustic configuration, such as side port orientation and exact SPL rating, against the manufacturer's datasheet before procurement. Confirm RoHS compliance status and packaging details directly with the supplier or authorized distributor to ensure alignment with project requirements.

Selection Notes

Select this component for applications requiring high-fidelity audio in constrained spaces. Evaluate the 69 Ohm impedance match with driving circuits. Consider the 200 Hz to 5.5 kHz bandwidth suitability for speech-centric or specific tone reproduction needs rather than full-range audio.

Part Context

This part belongs to the Knowles balanced armature speaker family, widely used in hearing healthcare and specialized audio electronics. These components are engineered for miniaturization and reliability in implantable or wearable medical devices.

Replacement Considerations

Consult official substitution lists for compatible balanced armature speakers with matching impedance and dimensional constraints.