EA-21842

Microphones Overview

The Knowles EA-21842 is an omnidirectional electret microphone designed for compact audio applications. It features a sensitivity of -59 dBA and utilizes a 12S port configuration. The component measures 5.56 mm in length, 3.98 mm in width, and 2.21 mm in depth. Packaged in bulk, it belongs to the EA series of audio devices manufactured by Knowles.

Microphones Feature Summary

• Omnidirectional acoustic design for uniform sound capture
• Compact surface-mount form factor suitable for space-constrained electronics
• Integrated 12S port structure for optimized acoustic performance

Microphones Applications

• Consumer electronic audio input systems
• Portable communication devices
• Voice recognition modules

Microphones Procurement Notes

Verify the specific suffix variant required for the application, as ordering codes may denote distinct packaging or minor specification variations. Confirm RoHS compliance status through official documentation prior to integration. Ensure the selected package type matches the assembly process requirements. Cross-reference the manufacturer part number with authorized distributor catalogs to validate current availability and sourcing channels.

Microphones Selection Notes

Select this component when an omnidirectional response is necessary for ambient sound pickup. The -59 dBA sensitivity level suits standard voice-level inputs without requiring excessive amplification. The small physical dimensions allow placement in tight enclosures where larger microphones cannot fit. Consider the bulk packaging format for manual or semi-automated assembly lines.

Microphones Part Context

This microphone belongs to the EA series from Knowles, a line focused on high-performance audio solutions. The series offers various configurations tailored for different acoustic needs. As an audio device, it falls under the broader category of transducers used in signal conversion. The product represents a standard solution for general-purpose voice capture in modern consumer hardware.

Microphones Replacement Considerations

Consult official substitution lists for compatible alternatives within the EA series. Verify dimensional compatibility and electrical characteristics before swapping components.