EM-27131-000

Microphones Overview

The Knowles EM-27131-000 is an analog electret condenser microphone designed for audio applications. It features an omnidirectional polar pattern and operates within a frequency range of 100 Hz to 10 kHz. The device exhibits a sensitivity of -62 dB ±4 dB at 74 dB SPL, with an impedance of 4.4 kOhms. It utilizes solder pad termination and measures 3.57mm x 3.57mm in footprint dimensions.

Microphones Feature Summary

• Omnidirectional acoustic design for uniform sound capture
• Electret condenser transducer technology
• Surface mount solder pad termination

Microphones Applications

• Audio recording devices
• Voice recognition systems
• Consumer electronics microphones

Microphones Procurement Notes

Verify the specific datasheet version from Knowles or authorized distributors to confirm RoHS compliance status and exact mechanical tolerances. Ensure the procurement channel provides original manufacturer documentation to validate electrical parameters such as sensitivity and impedance against the official specifications.

Microphones Selection Notes

Select this component when an omnidirectional response is required for general audio pickup. Consider the fixed sensitivity and impedance values for pre-amplifier matching. Verify that the surface mount package fits the available PCB real estate and that the operating temperature range meets the environmental requirements of the target application.

Microphones Part Context

This part belongs to the Knowles EM series of audio products. It is categorized under microphones within the broader audio components portfolio. The series typically includes various electret condenser options tailored for different sensitivity and packaging needs in consumer and industrial audio equipment.

Microphones Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Consult Knowles technical support or authorized distributor catalogs for direct replacements or pin-compatible alternatives that match the specified electrical and mechanical parameters.