SR6438NWS-160

Overview

The Knowles SR6438NWS-160 is a round balanced armature receiver with a 55.5 Ohms impedance and 109.5 dBA sensitivity. It operates within a frequency range of 200 Hz to 9.4 kHz, featuring a top port design for acoustic output. The component measures 6.4 mm in diameter and 4 mm in depth, utilizing solder pad termination for panel mounting. It functions reliably between 0°C and +63°C.

Feature Summary

• Balanced armature transducer technology
• Top port acoustic configuration
• Panel mount installation style

Applications

• Hearing aid receivers
• Medical audio devices
• Personal communication equipment

Procurement Notes

Verify the specific suffix against official Knowles documentation to confirm acoustic tuning and impedance characteristics. Ensure compatibility with existing housing designs regarding the 6.4 mm diameter and 4 mm depth dimensions. Confirm that the operating temperature range meets the final device requirements.

Selection Notes

Select this model for applications requiring high sensitivity and compact form factors. The balanced armature design offers efficient sound reproduction in small enclosures. Verify that the 55.5 Ohms impedance matches the driving circuit capabilities for optimal power transfer and performance.

Part Context

This component belongs to the SR series of balanced armature receivers from Knowles. These devices are engineered for high-fidelity audio reproduction in space-constrained environments. The series is widely utilized in hearing assistance technologies where size and acoustic precision are critical parameters.

Replacement Considerations

Consult official Knowles substitution guides for verified alternatives. Cross-reference impedance and sensitivity specifications to ensure acoustic equivalence. Validate mechanical footprint compatibility before implementation.