AOM-6742L

Overview

The AOM-6742L-R is an omnidirectional electret condenser microphone manufactured by PUI Audio, Inc. It features a cylindrical design with dimensions of 9.7 mm in diameter and length, and 4.5 mm in depth. The component operates on a supply voltage range of 1.5 VDC to 10 VDC, drawing a maximum current of 500 µA. It exhibits a sensitivity of -42 dB ±3dB and has an impedance of 2.2 kOhms. The frequency response spans from 30 Hz to 15 kHz or 16 kHz depending on the source specification. Termination is achieved via solder pads.

Feature Summary

• Omnidirectional acoustic pickup pattern for uniform sound capture
• Electret condenser transducer technology
• Low power consumption suitable for battery-operated devices
• Solder pad termination for direct board mounting

Applications

• Consumer electronic audio input devices
• Portable communication equipment
• General purpose voice recording applications

Procurement Notes

Verify the specific suffix (e.g., -R) against the required datasheet revision, as manufacturer part numbers may include variant codes that affect packaging or minor mechanical tolerances. Confirm the operating voltage requirements align with the target circuit design, noting the specified range of 1.5 VDC to 10 VDC. Ensure the solder pad termination style matches the PCB footprint layout. Cross-reference the sensitivity tolerance of ±3dB with system noise budget requirements.

Selection Notes

Select this component when an omnidirectional response is required for general ambient sound capture rather than directional isolation. The low impedance of 2.2 kOhms facilitates easy interfacing with standard preamplifier stages without complex biasing networks. Consider the physical dimensions of 9.7 mm diameter when evaluating space constraints within the host enclosure. The wide operating voltage range provides flexibility in power supply design across various consumer electronics platforms.

Part Context

This model belongs to the PUI Audio line of analog microphones designed for cost-effective integration into mass-produced electronics. The series typically utilizes standard electret condenser elements housed in compact cylindrical packages. These components are engineered for reliability in standard environmental conditions typical of consumer goods. The product family emphasizes straightforward implementation through simple biasing requirements and robust mechanical construction.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. When seeking alternatives, ensure the replacement maintains the same omnidirectional characteristic, similar sensitivity level around -42 dB, and compatible impedance. Verify that the new component supports the required 1.5 VDC to 10 VDC operating range and fits the existing 9.7 mm diameter footprint.