EA-21939-000

Microphones Overview

The Knowles EA-21939-000 is an electret condenser microphone with analog output and omnidirectional polar pattern. It operates at a rated voltage of 1.3V with a supply current of 50μA. The device features a side port location and measures 5.56mm x 3.98mm x 2.21mm. Its sensitivity is -59dB, and it functions within a frequency range of 100 Hz to 4.8 kHz.

Microphones Feature Summary

• Omnidirectional acoustic design for uniform sound capture
• Analog signal output type
• Side port configuration

Microphones Applications

• Voice recording devices
• Consumer audio equipment
• Communication modules

Microphones Procurement Notes

Verify the component status as obsolete before procurement planning. Confirm physical dimensions and electrical specifications against official datasheets to ensure compatibility with existing circuit designs. Check for authorized replacement parts if new production is required.

Microphones Selection Notes

Select this component for applications requiring an omnidirectional electret condenser microphone with analog output. Ensure the system supports the 1.3V operating voltage and 50μA supply current. Verify that the frequency response meets the specific audio requirements of the target application.

Microphones Part Context

This part belongs to the EA series of microphones from Knowles Electronics. It is classified as an electret condenser type with analog output. The component is currently listed as obsolete in distributor catalogs.

Microphones Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult manufacturer resources for potential obsolescence management options.