EM-24447-C36

Microphones Overview

The Knowles EM-24447-C36 is an omnidirectional analog microphone designed for low-power applications. It operates at a supply voltage of 1.3 V with a current rating of 50 uA. The device features a sensitivity of -58.5 dB ±4 dB at 74 dB SPL and an impedance of 4.4 kOhms. Its frequency range extends from 300 Hz to 5.8 kHz. The component utilizes SMD/SMT termination and measures 3.57 mm in length, 3.57 mm in width, and 2.28 mm in depth.

Microphones Feature Summary

• Omnidirectional acoustic design for uniform sound capture
• Low power consumption suitable for battery-operated devices
• Analog output signal generation

Microphones Applications

• Voice recognition systems
• Mobile communication devices
• Hands-free telephony modules

Microphones Procurement Notes

Verify the specific suffix C36 against official Knowles documentation to confirm pinout and mechanical tolerances. Ensure compatibility with existing PCB footprints and soldering profiles. Cross-reference the sensitivity tolerance of ±4 dB with system requirements. Confirm RoHS compliance status through the manufacturer's latest declaration.

Microphones Selection Notes

Select this component when a compact, low-voltage microphone is required for voice-centric applications. The 1.3 V operating voltage suits portable electronics. The 4.4 kOhm impedance must match the input stage of the connected amplifier or ADC. Verify that the 300 Hz to 5.8 kHz frequency response covers the necessary speech bandwidth.

Microphones Part Context

This part belongs to the Knowles EM series of MEMS microphones. These components are engineered for consumer electronics requiring high reliability and small form factors. The series typically offers various sensitivity and frequency response options to suit different audio capture needs.

Microphones Replacement Considerations

Direct substitutes include EM-24446-C36 and EM-24047-C36. Verify electrical parameters such as sensitivity and impedance before substitution. Mechanical dimensions should be checked for fit within the enclosure.