FB-EM-30345-000

Microphones Overview

The Knowles FB-EM-30345-000 is an analog boom microphone designed for noise-canceling applications. It features a sensitivity of -50dB ±4dB at 74dB SPL and operates within a voltage range of 1.3 V to 10 V. The device has a supply current rating of 50 uA and an impedance of 4.4 kOhms. Physically, it measures 167 mm in length with a diameter of 5.4 mm (approximately 0.21 inches), though some sources cite a 19 mm or 0.748-inch diameter for the head assembly. It utilizes wire leads for connection.

Microphones Feature Summary

• Provides clear voice transmission in noisy environments through noise-canceling technology
• Supports long-term reliability suitable for aviation, industrial, and tactical use cases
• Reduces power consumption requirements with low supply current specifications

Microphones Applications

• Aviation communication systems
• Industrial two-way radio equipment
• Tactical military communication devices

Microphones Procurement Notes

Verify that the specific ordering suffix matches the required cable length and connector type. Confirm RoHS compliance status if environmental regulations apply to your manufacturing process. Ensure the operating voltage range aligns with your system's power supply capabilities before integration.

Microphones Selection Notes

Select this component when high-directional noise cancellation is critical for voice clarity in high-stakes environments. Consider the physical dimensions and wire lead configuration for mechanical fit within the housing. Evaluate the impedance match with the receiving audio circuitry to ensure optimal signal transfer without excessive loading.

Microphones Part Context

This part belongs to the Knowles boom microphone family, specifically engineered for professional and ruggedized communication needs. It complements other models in the series by offering standardized electrical characteristics while providing specific physical form factors tailored for headset integration in demanding operational settings.

Microphones Replacement Considerations

Consult official Knowles documentation for direct cross-reference part numbers. Verify that any substitute maintains identical sensitivity, impedance, and voltage ratings to prevent performance degradation in existing designs.