AOM-4542P

Overview

The AOM-4542P is an omnidirectional electret microphone manufactured by PUI Audio. It features a cylindrical design with a diameter of 4.5 mm and a depth of 9.7 mm. The component operates at a supply voltage of 1.5 V and provides a sensitivity of -42 dB. Its nominal impedance is 2.2 kOhms, and it utilizes solder pin termination for circuit integration.

Feature Summary

• Omnidirectional acoustic pickup pattern
• Low voltage operation capability
• Solder pin termination style

Applications

• Consumer electronics audio input
• Industrial control systems
• Security and fire alarm devices

Procurement Notes

Verify the specific suffix (e.g., NF-R) as the base model may have variations in packaging or compliance status. Confirm current lifecycle status, as some variants are marked as obsolete. Ensure compatibility with existing board layouts regarding the 4.5 mm diameter and 9.7 mm height constraints before finalizing procurement.

Selection Notes

Select this component when a compact, low-voltage microphone is required for general-purpose sound capture. The 2.2 kOhm impedance matches standard preamplifier inputs. Consider the physical dimensions carefully to ensure adequate clearance within the target enclosure design.

Part Context

This part belongs to the AOM series of microphones from PUI Audio, designed for various audio sensing applications. The manufacturer specializes in audio components including speakers, transducers, and indicators for medical, industrial, and consumer markets.

Replacement Considerations

Check for direct substitutes within the AOM series such as AOM-4540P or AOM-4544P if sensitivity or impedance adjustments are needed. Verify that any replacement maintains the same 4.5 mm diameter and 1.5 V operating voltage requirements.