TOM-1242L-NF-C3310-R

Overview

The TOM-1242L-NF-C3310-R is an omnidirectional electret condenser microphone manufactured by PUI Audio, Inc. It features a circular shape with a diameter of 4mm and operates within a frequency range of 20 Hz to 20 kHz. The device requires a supply voltage between 1 VDC and 10 VDC, drawing a current of 500 µA. Key electrical specifications include a sensitivity of -42 dB and an impedance of 2.2 kohm. It utilizes solder pads for termination and offers a signal-to-noise ratio of 60dB.

Feature Summary

• Omnidirectional sound capture with a 360-degree polar pattern
• Ultra-small 4mm diameter form factor suitable for compact designs
• Analog output via solder pad termination

Applications

• Conference phones
• General analog audio applications
• Embedded voice recording systems

Procurement Notes

Verify the specific suffix C330-R against official PUI Audio documentation to confirm exact manufacturing revisions. Ensure compatibility with existing biasing circuits given the 1V to 10V operating range. Cross-reference the 2.2kOhm impedance requirement with pre-amplifier input stages to maintain optimal signal integrity during integration.

Selection Notes

Select this component when a low-profile, omnidirectional pickup is required for voice-centric applications. The wide supply voltage tolerance allows flexibility in power design. Confirm that the 500µA current draw fits within the system's power budget. The solder pad interface necessitates appropriate PCB footprint planning for reliable mechanical and electrical connection.

Part Context

This model belongs to the TOM series of ultra-small microphones from PUI Audio. It is distinct from the discontinued AOM-4542P-NF-R, which shares similar electrical characteristics but differs in physical dimensions and termination style. The TOM series is specifically engineered for space-constrained consumer electronics requiring high-quality analog audio input.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Engineers should consult PUI Audio directly for qualified alternatives or verify if the discontinued AOM-4542P-NF-R serves as a functional equivalent based on specific mechanical constraints.