EM-23346-C47

Microphones Overview

The Knowles EM-23346-C47 is an analog, omnidirectional electret condenser microphone designed for surface-mount applications. It operates at a rated voltage of 1.3 V with a supply current of 50 µA. The device features a sensitivity of -52 dB ±3 dB at 74 dB SPL and an impedance of 4.4 kOhms. Its frequency response spans from 100 Hz to 10 kHz. The component measures 3.57 mm by 3.57 mm with a maximum height of 2.28 mm, utilizing side-port termination.

Microphones Feature Summary

• Omnidirectional acoustic design for uniform sound capture
• Analog output signal generation via electret condenser technology
• Surface-mount pad termination for automated assembly integration

Microphones Applications

• Voice recognition systems requiring low-power audio input
• Consumer electronic devices with limited board space constraints
• Portable communication equipment utilizing analog microphone interfaces

Microphones Procurement Notes

Verify the specific suffix C47 against official Knowles documentation to confirm exact sensitivity tolerance and packaging configuration. Ensure compatibility with the target operating voltage of 1.3 V and check RoHS compliance status for the specific manufacturing batch before finalizing procurement specifications.

Microphones Selection Notes

Select this component when a compact, low-current omnidirectional microphone is required for analog signal processing. The fixed 4.4 kOhm impedance and -52 dB sensitivity define the interface requirements for the host amplifier circuit. Confirm that the physical dimensions fit within the designated footprint on the printed circuit board.

Microphones Part Context

This model belongs to the Knowles EM series of microphones, which are engineered for high-reliability audio sensing in consumer electronics. The series emphasizes miniaturization and consistent performance across various environmental conditions, supporting manufacturers in designing compact audio-enabled devices.

Microphones Replacement Considerations

Consult official Knowles substitution guides for verified alternatives. Cross-reference electrical parameters such as sensitivity, impedance, and operating voltage to ensure functional equivalence without modifying the host circuit design.