CI-32139-000

$26.48

Description：SPEAKER 47OHM TOP PORT 131.5DB
Series：CI
Mfr：Knowles
Package：Tray

SKU:33f4075b9c46 Category: Speakers Brand: Knowles

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Product introduction

Product Detailed Parameters

Description：SPEAKER 47OHM TOP PORT 131.5DB
Series：CI
Mfr：Knowles
Package：Tray
Type：Receiver, Balanced Armature
Technology：Magnetic
Impedance：47 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：-
Port Location：Top
Material - Cone：-
Material - Magnet：-
Ingress Protection：-
Ratings：-
Frequency Range：200 Hz ~ 5.5 kHz
Power - Rated：-

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CI-32139-000

Overview

The Knowles CI-32139-000 is a balanced armature receiver speaker designed for audio applications. It features a rectangular top port configuration and operates with an impedance of 47 Ohms. The device delivers a sound pressure level of 131.5 dB and provides an effective frequency response range from 200 Hz to 5.5 kHz.

Feature Summary

Balanced armature transducer technology
Rectangular top port design
High sensitivity output

Applications

Audio receivers
Hearing aids
Medical devices

Procurement Notes

Verify the specific datasheet version when sourcing, as manufacturing details may vary. Confirm that the 47 Ohm impedance and 131.5 dB SPL specifications match your circuit requirements. Ensure the rectangular top port form factor fits your enclosure constraints before finalizing procurement.

Selection Notes

Select this component when high acoustic efficiency is required in a compact form factor. The balanced armature architecture suits applications needing precise audio reproduction within limited space. Verify compatibility with driving circuits capable of handling the specified 47 Ohm load.

Part Context

This part belongs to Knowles' portfolio of precision audio transducers. It is categorized under speakers and transducers, specifically functioning as a receiver element. The product line focuses on miniaturized acoustic solutions for demanding electronic environments.

Replacement Considerations

Check for direct substitutes with matching 47 Ohm impedance and similar frequency response curves. Ensure replacement parts maintain the rectangular top port geometry for mechanical fit.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.