CI-22748-000

$18.41

Description：SPEAKER 174OHM TOP PORT 131.5DB
Series：CI
Mfr：Knowles
Package：Bulk

SKU:95fd8a742d0b Category: Speakers Brand: Knowles

Consult the customer manager about the wholesale price.

consultation hotline：86-132-6715-2157

email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.

Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.

Product introduction

Product Detailed Parameters

Description：SPEAKER 174OHM TOP PORT 131.5DB
Series：CI
Mfr：Knowles
Package：Bulk
Type：Receiver, Balanced Armature
Technology：Magnetic
Impedance：174 Ohms
Power - Max：-
Shape：Rectangular
Termination：Solder Pads
Size / Dimension：0.373" L x 0.283" W (9.47mm x 7.18mm)
Height - Seated (Max)：0.165" (4.19mm)
Frequency - Self Resonant：-
Efficiency - dBA：131.5
Efficiency - Testing：-
Efficiency - Type：Sensitivity
Port Location：Top
Material - Cone：-
Material - Magnet：-
Ingress Protection：-
Ratings：-
Frequency Range：200 Hz ~ 5.5 kHz
Power - Rated：-

Download product information

CI-22748-000

Overview

The Knowles CI-22748-000 is a balanced armature receiver speaker designed for high-fidelity audio reproduction in space-constrained applications. It features a rectangular top profile with dimensions of 9.47 mm in length, 7.18 mm in width, and 4.19 mm in height. The component operates within a frequency range of 200 Hz to 5.5 kHz and has an impedance of 174 Ohms. It delivers a sound pressure level of 128 dBA and utilizes solder pad termination.

Feature Summary

Balanced armature technology for clear audio
Rectangular form factor for compact integration
High sound pressure level output

Applications

Hearing aids
In-ear monitors
Compact audio receivers

Procurement Notes

Verify the specific impedance tolerance and acoustic performance against the official Knowles datasheet before finalizing design integration. Ensure that the solder pad termination method aligns with your assembly process capabilities. Confirm that the operating frequency range meets the target application requirements.

Selection Notes

Select this component when space is limited but high fidelity is required. The rectangular shape allows for efficient PCB layout compared to circular alternatives. Consider the 174 Ohm impedance for matching with driver circuits. Evaluate the 128 dBA SPL against the necessary volume levels for the intended use case.

Part Context

This part belongs to Knowles' portfolio of precision audio components, specifically their balanced armature speakers. These are engineered for miniaturized electronics where size constraints preclude traditional dynamic drivers. The CI series focuses on delivering consistent acoustic performance in small form factors.

Replacement Considerations

Check for compatible balanced armature receivers from Knowles or other manufacturers with similar dimensions (9.47 x 7.18 x 4.19 mm) and impedance (approx. 174 Ohms). Verify frequency response curves to ensure acoustic compatibility.