TO-24611-000

Overview

The TO-24611-000 is an omnidirectional analog microphone manufactured by Knowles. It utilizes an electret condenser transducer element designed for audio signal capture within a frequency range of 100 Hz to 5 kHz. The device operates on a supply voltage ranging from 0.9 V to 1.6 V, with a typical rated voltage of 1.3 V and a supply current of 50 µA. It features a sensitivity of -52 dB ±3 dB at 74 dB SPL and presents an impedance of 4.4 kOhms. The component is housed in a square pad-mount package measuring 3.57 mm x 3.57 mm with a maximum height of 2.28 mm.

Feature Summary

• Omnidirectional acoustic response pattern for uniform sound pickup
• Analog output suitable for direct interface with audio processing circuits
• Low power consumption with 50 µA supply current requirement

Applications

• Consumer electronic audio input devices
• Voice recognition systems
• Portable communication equipment

Procurement Notes

Verify the specific revision status and RoHS compliance documentation prior to integration. Confirm that the pad-mount termination style aligns with the target PCB footprint design. Ensure the operating voltage range matches the system power supply rails to maintain optimal sensitivity and noise performance.

Selection Notes

Select this component when an omnidirectional pickup pattern is required for general voice capture applications. The low supply current makes it suitable for battery-operated devices. Verify that the 100 Hz to 5 kHz frequency response meets the specific audio bandwidth requirements of the application.

Part Context

This microphone belongs to the EM Series produced by Knowles. It serves as a replacement or alternative for legacy designs requiring compact, low-power analog microphones. The part is identified as not recommended for new designs due to potential minimum order quantity restrictions.

Replacement Considerations

The TO-24611-000 is listed as a similar substitute for the EM-23346-C36 model.