EA-21842-G17

Microphones Overview

The Knowles EA-21842-G17 is an omnidirectional electret condenser microphone designed for compact audio applications. It features a sensitivity of -59dB ±3dB referenced to 74dB SPL at 1kHz. The device operates with a rated voltage of 1.3V and supports a frequency range from 100Hz to 10kHz. Its physical dimensions are 5.56mm in length, 3.98mm in width, and 2.21mm in depth, utilizing a 12S port configuration.

Microphones Feature Summary

• Omnidirectional acoustic design for uniform sound capture
• Electret condenser transducer technology
• Compact surface-mount form factor

Microphones Applications

• Consumer electronic audio devices
• Portable communication equipment
• Voice recognition systems

Microphones Procurement Notes

Verify the specific suffix against official Knowles documentation to confirm exact sensitivity tolerances and port configurations. Ensure compatibility with the target circuit's biasing requirements, as the component requires a 1.3V rated voltage. Confirm RoHS compliance status through the manufacturer's current datasheet before finalizing procurement specifications.

Microphones Selection Notes

Select this component when space constraints require a small footprint microphone with omnidirectional pickup patterns. The -59dB sensitivity offers a balanced output level for standard analog interfaces. Consider the 100Hz to 10kHz frequency response suitability for voice-centric applications rather than high-fidelity music recording.

Microphones Part Context

This model belongs to the EA series of microphones manufactured by Knowles Electronics. The series focuses on providing reliable audio sensing solutions for embedded systems. The EA-21842-G17 variant specifically addresses needs for low-profile audio input modules in modern portable electronics.

Microphones Replacement Considerations

Cross-reference part numbers such as EA-21842-012 or EA-21842-G31 for potential substitutes. Verify that dimensional tolerances and electrical characteristics match the original design requirements before implementing any alternative components.