SR6438NWS-158

Description：SPEAKER SMD
Series：-
Mfr：Knowles
Package：Bulk

SKU:9f1a7c0fe0d5 Category: Speakers Brand: Knowles

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Product introduction

Product Detailed Parameters

Description：SPEAKER SMD
Series：-
Mfr：Knowles
Package：Bulk
Type：-
Technology：-
Impedance：-
Power - Max：-
Shape：-
Termination：-
Size / Dimension：-
Height - Seated (Max)：-
Frequency - Self Resonant：-
Efficiency - dBA：-
Efficiency - Testing：-
Efficiency - Type：-
Port Location：-
Material - Cone：-
Material - Magnet：-
Ingress Protection：-
Ratings：-
Frequency Range：-
Power - Rated：-

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SR6438NWS-158

Overview

The Knowles SR6438NWS-158 is a balanced armature receiver designed for audio applications. It features a round shape with a diameter of 6.4 mm and a depth of 4 mm. The component operates within a temperature range of 0°C to +63°C. Key electrical specifications include an impedance of 55.5 Ohms, a resonant frequency of 1.264 kHz, and a sound pressure level of 109.5 dBA. It utilizes solder pad termination for panel mounting.

Feature Summary

Balanced armature transducer technology
High sound pressure level output
Compact round form factor

Applications

Hearing aids
Medical devices
Communication headsets

Procurement Notes

Verify current manufacturing status as the part may be discontinued or subject to limited availability. Confirm RoHS compliance details through official documentation before integration. Ensure sourcing channels provide genuine components from authorized distributors to maintain quality standards.

Selection Notes

Select this component for applications requiring high sensitivity in a small footprint. The 55.5 Ohm impedance and specific resonant frequency suit targeted audio reproduction needs. Verify mechanical fitment against the 6.4 mm diameter constraint and ensure thermal limits align with the operating environment.

Part Context

This model belongs to the SR series of receivers from Knowles Acoustics. These components are engineered for high-fidelity audio transmission in compact electronic devices. The series emphasizes miniaturization while maintaining acoustic performance suitable for professional and medical audio equipment.

Replacement Considerations

Check datasheets for direct substitutes with matching impedance and dimensions. Verify that alternative balanced armature speakers meet the same SPL and frequency response requirements. Ensure compatibility with existing mounting structures and soldering processes.

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.