HM-31066-000

Microphones Overview

The Knowles HM-31066-000 is a hybrid analog microphone designed for voice applications. It operates within a frequency range of 100 Hz to 10 kHz. The device features a sensitivity of -20dB ±3dB referenced at 94dB SPL. This component integrates specific signal processing characteristics, including a defined roll-off profile, to optimize audio performance in compact electronic systems requiring reliable acoustic transduction.

Microphones Feature Summary

• Hybrid analog microphone architecture
• Integrated high-frequency roll-off characteristic
• Optimized for voice frequency band operation

Microphones Applications

• Voice-enabled consumer electronics
• Communication devices requiring analog input
• Compact audio recording modules

Microphones Procurement Notes

Verify the exact datasheet version when sourcing, as Knowles Electronics issues process change notifications that may affect manufacturing details for this part number. Confirm RoHS compliance status through official distributor documentation prior to integration. Ensure the supply chain provides genuine components from authorized channels to maintain specified acoustic performance and reliability standards.

Microphones Selection Notes

Select this component when an analog output with specific high-frequency attenuation is required for voice signals. The 100 Hz to 10 kHz bandwidth suits human speech reproduction. Consider the -20dB sensitivity level against your amplifier's input requirements. Verify mechanical mounting constraints and interface compatibility with existing circuit designs before finalizing the bill of materials.

Microphones Part Context

This model belongs to the Knowles HM series of hybrid microphones. These components combine MEMS sensing elements with integrated signal conditioning. The series is engineered for space-constrained applications where traditional electret or dynamic microphones are unsuitable due to size or power consumption limitations.

Microphones Replacement Considerations

Official substitutes include HM-31067-000, HM-31068-000, HM-31069-000, and HM-31070-P88. Cross-referencing requires verifying identical sensitivity, frequency response, and package dimensions to ensure functional equivalence without circuit redesign.