AOM-4540L

Overview

The AOM-4540L is an electret condenser microphone manufactured by PUI Audio, Inc. It features an omnidirectional pickup pattern and a sensitivity of -40 dB (±3 dB). The component operates at a supply voltage of 1.5 V with a nominal impedance of 2.2 kOhms. Its physical dimensions are 9.7 mm in diameter and length, with a depth of 4.5 mm. The device utilizes solder pin termination for circuit integration.

Feature Summary

• Omnidirectional acoustic design for uniform sound capture from all directions
• Electret condenser technology providing analog audio output
• Compact cylindrical form factor suitable for space-constrained assemblies

Applications

• Consumer electronics audio input modules
• Industrial control panel voice interfaces
• Medical equipment monitoring systems

Procurement Notes

Verify RoHS compliance status through official manufacturer documentation prior to integration. Confirm that the 1.5 V operating voltage aligns with target circuit biasing requirements. Ensure mechanical mounting clearance accommodates the 9.7 mm diameter and 4.5 mm depth specifications. Validate solder pin compatibility with intended PCB assembly processes.

Selection Notes

Select this model when omnidirectional coverage is required for general ambient sound detection. The fixed 2.2 kOhm impedance dictates preamplifier input matching considerations. The -40 dB sensitivity level suits applications requiring moderate gain stages. Compare against higher sensitivity variants if low-noise performance is critical for the specific acoustic environment.

Part Context

This component belongs to the AOM series of microphones produced by PUI Audio, Inc., a manufacturer specializing in audio components including indicators, transducers, and speakers. The company provides standard and custom audio solutions for industrial, medical, and consumer markets. The AOM series represents their line of electret condenser microphones designed for reliable analog signal conversion.

Replacement Considerations

The AOM-4540P-R serves as a functional substitute within the same series, sharing identical physical dimensions and electrical characteristics except for a sensitivity difference of -44 dB compared to the -40 dB specification of the AOM-4540L.