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Product Detailed Parameters
- Description：MIC COND MATCH ANALOG OMNI
- Series：TO
- Mfr：Knowles
- Package：Tray
- Type：Electret Condenser, Matched Set
- Output Type：Analog
- Direction：Omnidirectional
- Frequency Range：200 Hz ~ 1 kHz
- Sensitivity：-56.5dB ±3dB @ 74dB SPL
- S/N Ratio：-
- Impedance：4.4 kOhms
- Voltage Range：-
- Current - Supply：50 µA
- Port Location：Side
- Ratings：-
- Termination：-
- Size / Dimension：-
- Height (Max)：-
- Shape：-
- Grade：-
- Qualification：-
- Voltage - Rated：1.3 V
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Overview
The Knowles TO-30047-D60 is an omnidirectional electret microphone kit designed for analog audio signal capture. It operates within a frequency range of 200Hz to 1kHz and features a sensitivity of -56.5dB ±3dB at 74dB SPL. The device requires a supply voltage of 1.3V with a current consumption of 50µA. Its electrical impedance is 4.4 kOhms, and the sound port is positioned on the side. The component is RoHS compliant and lead-free.
Feature Summary
- Omnidirectional acoustic design for uniform sound pickup
- Integrated electret capacitor structure for analog output
- Side-port configuration for flexible mounting orientation
Applications
- Voice recognition systems
- Intercom devices
- Telecommunication handsets
Procurement Notes
Verify the specific revision level against the manufacturer's latest documentation to ensure compatibility with required sensitivity tolerances. Confirm that the 1.3V operating voltage aligns with the target circuit design. Ensure the side-port orientation matches the mechanical enclosure constraints. Validate RoHS compliance status if required by regional regulations.
Selection Notes
Select this component when a low-power, omnidirectional microphone is needed for voice-band applications. The 50µA current draw suits battery-operated devices. The 4.4 kOhm impedance must be matched with appropriate pre-amplifier input stages. Consider the 200Hz lower frequency limit when evaluating suitability for full-range audio recording versus speech-only transmission.
Part Context
This part belongs to the Knowles electret microphone portfolio, which specializes in compact acoustic sensors. The TO-30047 series typically includes matching kits for ease of integration. These components are engineered for consistent performance in consumer electronics and communication equipment requiring reliable voice capture.
Replacement Considerations
Consult official cross-reference lists for parametrically equivalent models. Verify that substitutes maintain the same -56.5dB sensitivity and 4.4 kOhm impedance. Ensure replacement parts support the 1.3V supply voltage and omnidirectional polar pattern.
