EA-21843-G18

Microphones Overview

The Knowles EA-21843-G18 is an omnidirectional electret condenser microphone designed for analog audio signal capture. It operates at a supply voltage of 1.3V and features solder pad termination for surface-mount integration. The device provides frequency response within the 100 Hz to 4.25 kHz range, suitable for voice-centric applications requiring compact form factors.

Microphones Feature Summary

• Omnidirectional acoustic design for uniform sound pickup from all directions
• Low-voltage operation optimized for portable battery-powered devices
• Analog output interface compatible with standard audio processing circuits

Microphones Applications

• Voice recognition modules in smart home devices
• Hands-free communication systems in mobile terminals
• Digital assistant microphones in IoT sensors

Microphones Procurement Notes

Verify the specific suffix G18 against official Knowles documentation to confirm pinout and acoustic port orientation. Ensure compatibility with 1.3V supply rails and validate impedance matching for the target analog front-end circuit before finalizing procurement orders.

Microphones Selection Notes

Select this component when low power consumption and omnidirectional coverage are required for voice input. Compare sensitivity specifications against other EA-series variants to ensure adequate signal-to-noise ratio for the intended acoustic environment and distance requirements.

Microphones Part Context

This part belongs to the Knowles EA series of electret condenser microphones. These components are engineered for high-volume consumer electronics, offering reliable performance in compact packages while maintaining consistent acoustic characteristics across manufacturing batches.

Microphones Replacement Considerations

Consult official substitution lists for direct equivalents. Verify that any alternative maintains identical electrical parameters, particularly the 1.3V operating voltage and omnidirectional polar pattern, to ensure functional parity without circuit redesign.