ED-27156-000

Speakers Overview

The Knowles ED-27156-000 is a balanced armature receiver designed for hearing aid applications. It features a rectangular form factor with dimensions of 6.3 mm in length, 4.29 mm in width, and 3 mm in depth. The component operates at a frequency of 4 kHz and delivers a sound pressure level of 102.5 dBA. It has an impedance of 128 Ohms and utilizes solder pad termination for board mounting.

Speakers Feature Summary

• Balanced armature transducer technology
• Rectangular surface mount package
• High efficiency acoustic output

Speakers Applications

• Behind-the-Ear (BTE) hearing aids
• In-The-Canal (ITC) hearing aids
• Medical audio receivers

Speakers Procurement Notes

Verify the specific datasheet revision to confirm RoHS compliance status and exact dimensional tolerances. Ensure the solder pad footprint matches the manufacturer's recommended land pattern for reliable board attachment. Confirm that the 128 Ohm impedance aligns with the target driver circuit requirements for optimal performance.

Speakers Selection Notes

Select this component when a compact, high-efficiency receiver is required for BTE or ITC hearing aid designs. The 4 kHz resonant frequency and 102.5 dBA sensitivity make it suitable for clear voice reproduction in small enclosures. Verify compatibility with the intended acoustic tube or nozzle interface before finalizing the design.

Speakers Part Context

This part belongs to the ED/FED series of receivers from Knowles. These components are engineered specifically for the hearing healthcare industry, offering a balance between size constraints and acoustic performance. The series supports various hearing aid form factors requiring miniature audio transducers.

Speakers Replacement Considerations

No public substitute part numbers are confirmed in the provided documentation. Cross-referencing requires matching the 128 Ohm impedance, 4 kHz frequency response, and physical dimensions of 6.3 x 4.29 x 3 mm.