EM-30028-D59

Microphones Overview

The Knowles EM-30028-D59 is an omnidirectional electret condenser microphone designed for analog audio applications. It features a square surface-mount package with dimensions of 3.57 mm x 3.57 mm and a height of 2.21 mm, weighing approximately 80 mg. The device operates at a voltage of 1.3 V with a typical current consumption of 50 uA. Key electrical specifications include an output impedance of 4.4 kΩ and a sensitivity of -56.5 dB ± 3 dB.

Microphones Feature Summary

• Omnidirectional acoustic response for uniform sound capture from all directions
• Low power consumption suitable for battery-operated portable devices
• Compact square surface-mount form factor for space-constrained PCB layouts

Microphones Applications

• Portable consumer electronics requiring compact audio input
• Voice recognition systems needing omnidirectional pickup
• General purpose analog microphone circuits in small form factors

Microphones Procurement Notes

Verify the specific suffix D59 against the manufacturer's official datasheet to confirm exact pinout and termination style. Ensure compatibility with standard reflow soldering profiles for surface-mount assembly. Cross-reference the operating voltage and current requirements with the target system design to guarantee stable performance under load conditions.

Microphones Selection Notes

Select this component when an omnidirectional polar pattern is required for ambient sound capture rather than directional focusing. The low operating voltage and current make it appropriate for energy-efficient designs. Consider the physical dimensions and weight constraints if the application involves lightweight or miniaturized enclosures where bulk must be minimized.

Microphones Part Context

This part belongs to the improved EM microphone series by Knowles, which focuses on enhanced sensitivity and reduced input referred noise compared to previous generations. The EM series is widely utilized in modern audio hardware where consistent analog signal quality and reliable omnidirectional performance are critical for clear voice transmission.

Microphones Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify mechanical footprint compatibility and electrical parameters before considering any alternative components from other manufacturers.