EA-21843-058

Microphones Overview

The Knowles EA-21843-058 is an omnidirectional electret condenser microphone designed for topical applications. It features a compact surface-mount package with dimensions of 5.56 mm in length, 3.98 mm in width, and 2.21 mm in depth. The device operates with a sensitivity of -59 dBA and includes a 3-second port configuration to manage acoustic performance. This component is part of the EA series, offering analog output suitable for integration into audio signal processing circuits requiring precise sound capture.

Microphones Feature Summary

• Omnidirectional acoustic pickup pattern for uniform sound reception from all directions
• Electret condenser transducer technology providing stable analog audio output
• Compact surface-mount form factor optimized for space-constrained electronic assemblies

Microphones Applications

• Topical audio sensing devices
• Consumer electronics audio input modules
• Industrial automation voice recognition interfaces

Microphones Procurement Notes

Verify the specific port configuration (3S) against design requirements, as variants like the EA-21842-012 differ in porting. Confirm RoHS compliance status through official manufacturer documentation prior to final procurement decisions. Ensure compatibility with existing PCB footprint specifications.

Microphones Selection Notes

Select this model when an omnidirectional response is required within strict dimensional limits. Compare sensitivity levels against other EA series variants to ensure adequate signal-to-noise ratio for the target application environment. Validate that the 3-second port specification aligns with the intended acoustic damping needs.

Microphones Part Context

This microphone belongs to the Knowles EA series, which specializes in miniature electret condenser microphones. The series is engineered for high-volume consumer and industrial audio applications where small footprint and consistent performance are critical. The EA-21843-058 specifically utilizes a defined port structure to tailor its frequency response characteristics.

Microphones Replacement Considerations

The EA-21842-012 is a related variant within the same series but features a 12-second port instead of 3 seconds. Verify if the acoustic difference impacts system performance before substitution. No other direct cross-model replacements are confirmed in available public data.