EA-21842-G31

Microphones Overview

The Knowles EA-21842-G31 is an analog electret condenser microphone with omnidirectional characteristics. It operates within a frequency range of 10 Hz to 10 kHz and provides a sensitivity of -59 dB ±3dB referenced at 74 dB SPL. The component measures 5.56 mm in length, 3.98 mm in width, and 2.21 mm in depth. It utilizes solder pads for surface mount attachment and is designed for integration into compact audio capture systems requiring precise acoustic performance.

Microphones Feature Summary

• Omnidirectional acoustic pickup pattern for uniform sound reception from all directions
• Electret condenser transducer technology for stable analog signal output
• Surface mount construction with solder pad termination for automated assembly

Microphones Applications

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

Microphones Procurement Notes

Verify the specific suffix G31 against official Knowles documentation to confirm terminal configuration and packaging format. Ensure compatibility with reflow soldering profiles specified in the datasheet. Confirm RoHS compliance status through current manufacturer declarations before procurement.

Microphones Selection Notes

Select this component when an omnidirectional response is required within the 10 Hz to 10 kHz bandwidth. The -59 dB sensitivity suits applications needing moderate gain stages. Verify mechanical fitment against the 5.56 x 3.98 x 2.21 mm envelope constraints of the target design.

Microphones Part Context

This part belongs to the EA series of microphones manufactured by Knowles Electronics. The series focuses on providing reliable acoustic sensing solutions for various consumer and industrial applications. The EA-21842 variant specifically addresses needs for compact, high-performance microphone modules.

Microphones Replacement Considerations

Consult official substitution guides for compatible alternatives. Cross-reference electrical parameters such as sensitivity tolerance and frequency response to ensure functional equivalence without redesigning the acoustic chamber.