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Product Detailed Parameters
- Description：MICROPHONE
- Series：WP
- Mfr：Knowles
- Package：Tray
- Type：Boom
- Output Type：Analog
- Direction：Omnidirectional
- Frequency Range：100 Hz ~ 10 kHz
- Sensitivity：-74dB ±3dB @ 94dB SPL
- S/N Ratio：-
- Impedance：4.4 kOhms
- Voltage Range：-
- Current - Supply：50 µA
- Port Location：Top
- Ratings：-
- Termination：Solder Pads
- Size / Dimension：0.219" L x 0.157" W (5.56mm x 3.99mm)
- Height (Max)：0.089" (2.26mm)
- Shape：Rectangular
- Grade：-
- Qualification：-
- Voltage - Rated：1.3 V
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Overview
The Knowles WP-30113-PO3 is a subminiature electret condenser microphone designed for high-performance audio capture in space-constrained and rugged environments. It features an omnidirectional polar pattern with a frequency range of 100 Hz to 10 kHz. The device delivers a sensitivity of -74dB ±3dB at 94dB SPL. It utilizes solder pads for surface mount installation, ensuring reliable connectivity in compact circuit designs.
Feature Summary
- Compact form factor suitable for space-constrained applications
- Omnidirectional acoustic response for uniform sound pickup
- Electret condenser technology for stable analog signal output
Applications
- Portable electronic devices requiring miniaturized audio input
- Rugged environmental audio recording systems
- Communication equipment with limited internal volume
Procurement Notes
Verify the specific suffix designation (P03 vs PO3) against official Knowles documentation to ensure correct part identification. Confirm that the required sensitivity tolerance and frequency response align with system specifications before procurement. Ensure solder pad compatibility with the intended PCB layout process.
Selection Notes
Select this component when a small footprint and omnidirectional pickup are critical. Consider the -74dB sensitivity level for appropriate pre-amplifier matching. Evaluate the 100 Hz to 10 kHz bandwidth against target audio fidelity requirements. Verify mechanical stability needs for rugged environment operation.
Part Context
This model belongs to Knowles' subminiature electret microphone series, engineered for integration into compact consumer electronics and industrial audio devices. The product line emphasizes reliability and consistent performance in challenging physical conditions while maintaining a minimal profile.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided documentation. Consult official Knowles resources for potential cross-references or updated series replacements.
