FB-EM-30349-000

Microphones Overview

The Knowles FB-EM-30349-000 is an analog omnidirectional boom microphone designed for voice pickup applications. It features a frequency response range of 300 Hz to 4 kHz and operates with a supply voltage between 1.3 V and 10 V. The sensitivity is specified as -48 dB ±3 dB at 74 dB SPL. The assembly includes a 20 mm diameter capsule, a 167 mm long boom, and 60 mm wire leads. The unit has a cylindrical body with a 5.4 mm diameter.

Microphones Feature Summary

• Omnidirectional acoustic pattern for consistent voice capture from multiple angles
• Analog output signal suitable for direct interface with standard audio processing circuits
• Integrated boom assembly structure for fixed positioning relative to the sound source

Microphones Applications

• Hands-free communication systems
• Voice recognition devices
• Teleconference equipment

Microphones Procurement Notes

Verify that the specific revision matches the required sensitivity tolerance of -48 dB ±3 dB. Confirm the physical dimensions of the 167 mm boom length fit the mechanical constraints of the target enclosure. Ensure the operating voltage range of 1.3 V to 10 V aligns with the system power supply design.

Microphones Selection Notes

Select this component when a fixed-position omnidirectional microphone is required for near-field voice pickup. The integrated boom simplifies mechanical integration compared to separate microphone and stand assemblies. Consider the analog nature of the output if digital interfaces are preferred in the final product architecture.

Microphones Part Context

This part belongs to Knowles' line of analog boom microphones intended for embedded voice applications. It differs from general-purpose studio microphones by prioritizing compact integration and specific frequency shaping for speech intelligibility rather than wideband audio fidelity.

Microphones Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing circuitry before attempting substitution with other omnidirectional boom models.