TOM-1545S-R

Overview

The TOM-1545S-R is an omnidirectional electret microphone manufactured by PUI Audio. It features a compact surface-mount design with a 4 mm diameter and a total length of 6 mm. The device operates at a supply voltage of 2 VDC with a current draw of 0.5 mA. It presents an impedance of 2.2 kOhms and delivers a sensitivity of -42 dB. The component utilizes SMD/SMT termination for automated PCB assembly.

Feature Summary

• Omnidirectional acoustic pickup pattern suitable for ambient sound capture
• Compact surface-mount form factor designed for space-constrained electronics
• Integrated electret capsule requiring minimal external biasing components

Applications

• Consumer electronic devices requiring voice input
• Portable audio recording equipment
• Communication modules in handheld devices

Procurement Notes

Verify the specific suffix designation to confirm the exact sensitivity grade and termination style, as variations may exist within the product line. Ensure that the printed circuit board layout accommodates the specified 4 mm diameter footprint and 6 mm height clearance. Confirm compliance with relevant environmental directives such as RoHS before finalizing procurement specifications.

Selection Notes

Select this component when a low-profile, surface-mount microphone is required for general-purpose audio sensing. The 2 VDC operating voltage makes it compatible with standard low-voltage digital logic interfaces. Consider the -42 dB sensitivity rating against application noise floors to ensure adequate signal-to-noise ratio without excessive amplification.

Part Context

This microphone belongs to the TOM series from PUI Audio, which focuses on miniature audio transducers. The series offers various mounting options and electrical characteristics to support diverse embedded audio applications. The TOM-1545S-R specifically addresses the need for small-footprint, reliable sound detection in modern portable hardware designs.

Replacement Considerations

The TOM-1545P-R is a related variant within the same series but differs in physical dimensions and operating voltage. Verify mechanical fit and electrical compatibility before substitution. No other direct cross-references are documented in the provided source material.