EA-21868-000

Microphones Overview

The EA-21868-000 is an electret condenser microphone manufactured by Knowles. It features an omnidirectional polar pattern and operates within a frequency range of 300 Hz to 5.2 kHz. The device has a sensitivity of -61 dB ±4 dB at 74 dB SPL and requires a rated voltage of 1.3 V with a supply current of 50 µA. It utilizes solder pads for mounting.

Microphones Feature Summary

• Omnidirectional acoustic pickup pattern
• Electret condenser transducer technology
• Analog output signal

Microphones Applications

• Audio recording devices
• Voice recognition systems
• Consumer electronics audio input

Microphones Procurement Notes

Verify the specific datasheet revision and electrical tolerances against your design requirements. Confirm that the 1.3 V rated voltage and 50 µA supply current align with your power budget. Ensure the solder pad termination type matches your PCB layout capabilities.

Microphones Selection Notes

Select this component when an omnidirectional analog microphone is required for low-power applications. The 300 Hz to 5.2 kHz frequency response suits voice-centric designs. Verify compatibility with the 1.3 V operating voltage before integration into the circuit design.

Microphones Part Context

This part belongs to the Knowles EA series of microphones. It is an electret condenser type designed for general audio applications. The manufacturer provides technical documentation detailing the electrical characteristics and mechanical dimensions for system integration.

Microphones Replacement Considerations

Check for direct substitutes within the Knowles EA series or other omnidirectional electret microphones with similar sensitivity and voltage ratings. Ensure any replacement maintains the same frequency response and package footprint.