CI-28348-000

Overview

The Knowles CI-28348-000 is a balanced armature receiver speaker designed for audio applications. It features a rectangular shape and utilizes magnetic technology for sound transduction. The component has an impedance of 1 kOhm and provides a sound pressure level rating of 125 dB. It is configured with side porting to direct acoustic output. The unit is RoHS compliant, indicating adherence to environmental standards for restricted hazardous substances in electronic equipment.

Feature Summary

• Balanced armature technology for efficient audio reproduction
• Rectangular form factor suitable for compact enclosures
• Side port configuration for directional sound projection

Applications

• Hearing aids
• Medical audio devices
• Communication headsets

Procurement Notes

Verify the specific revision or suffix if available, as manufacturers may update components without changing the base number. Confirm that the 1 kOhm impedance matches the driver circuit requirements. Ensure the side port orientation aligns with the mechanical design of the target device. Check for any recent compliance updates regarding RoHS directives.

Selection Notes

Select this component when high sensitivity and low power consumption are required in a small footprint. The 1 kOhm impedance suggests compatibility with high-impedance amplifier stages or specific hearing aid circuits. Consider the rectangular dimensions during PCB layout and housing design to ensure proper fit and acoustic sealing.

Part Context

Knowles is a recognized manufacturer of precision audio components, particularly known for balanced armature receivers used in hearing instruments and medical devices. The CI series typically denotes their standard line of miniature speakers engineered for reliability and consistent performance in critical audio applications.

Replacement Considerations

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