GA38-30775-000

Microphones Overview

The Knowles GA38-30775-000 is a tubeless electret condenser microphone designed for analog audio capture. It features an omnidirectional directional pattern and operates within a frequency range of 20Hz to 20kHz. The device requires a supply voltage between 1.3V and 1.6V. Key electrical specifications include a sensitivity of -53.5dB ±3dB referenced at 74dB SPL, an impedance of 4.4 kOhms, and a current rating of 25 uA. The physical dimensions are rectangular, measuring 4.00mm in length, 2.00mm in width, and 2.00mm in depth.

Microphones Feature Summary

• Tubeless electret condenser construction for compact integration
• Omnidirectional acoustic pickup pattern for uniform sound reception
• Low voltage operation suitable for portable battery-powered devices

Microphones Applications

• Analog audio capture in consumer electronics
• Voice input modules for communication devices
• Portable electronic equipment requiring low-profile microphones

Microphones Procurement Notes

Verify the specific suffix and revision code against the manufacturer's latest datasheet to ensure compatibility with your design requirements. Confirm that the operating voltage range of 1.3V to 1.6V aligns with your system's power supply rails. Check for RoHS compliance status if required by your regional regulations or end-product standards. Ensure proper handling procedures are followed due to the sensitive nature of electret elements.

Microphones Selection Notes

Select this component when a small form factor and omnidirectional response are critical. The low impedance of 4.4 kOhms facilitates interfacing with standard preamplifiers. Consider the -53.5dB sensitivity level relative to your signal-to-noise ratio requirements. The tubeless design simplifies assembly processes compared to traditional can-style microphones.

Microphones Part Context

This part belongs to the Knowles GA38 series of surface-mount electret condenser microphones. The series is characterized by its miniature rectangular package and suitability for high-volume manufacturing. It serves as a direct replacement for larger legacy microphone types in space-constrained applications.

Microphones Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and mechanical footprint compatibility before considering alternative sources.