TM-23546-C36

Overview

The Knowles TM-23546-C36 is an omnidirectional analog electret condenser microphone designed for low-power audio applications. It operates within a supply voltage range of 0.9 V to 1.6 V, with a rated voltage of 1.3 V and a maximum supply current of 50 µA. The device features a sensitivity of -54.5 dB ±3 dB at 74 dB SPL and an output impedance of 4.4 kOhms. Its frequency response spans from 100 Hz to 5 kHz. The component utilizes a surface-mount solder pad termination and measures 3.57 mm x 3.57 mm in footprint with a maximum height of 1.77 mm.

Feature Summary

• Omnidirectional acoustic design for uniform sound capture
• Low-voltage operation suitable for portable battery-powered devices
• Electret condenser transducer technology for high sensitivity
• Surface-mount package optimized for automated assembly

Applications

• Portable consumer electronics audio input
• Voice recognition systems
• Hands-free communication modules
• IoT sensor nodes requiring audio sensing

Procurement Notes

Verify the specific suffix C36 against the manufacturer's latest datasheet to confirm pinout and packaging configuration. Ensure compatibility with the target operating voltage range of 0.9 V to 1.6 V. Confirm RoHS3 compliance status if required by regional regulations. Validate mechanical dimensions against the PCB footprint layout prior to integration.

Selection Notes

Select this component when low power consumption is critical, given the 50 µA supply current requirement. The omnidirectional pattern makes it suitable for environments where sound source direction varies. Ensure the application environment supports the specified temperature range and humidity levels. Consider the 4.4 kOhm output impedance for proper pre-amplifier interface matching.

Part Context

This microphone belongs to the TM Series from Knowles, which focuses on compact audio solutions. The series leverages established electret condenser technology to provide reliable performance in small form factors. The TM-23546-C36 specifically targets applications requiring balanced performance between size, power efficiency, and acoustic fidelity.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify electrical parameters such as sensitivity, impedance, and voltage range against potential alternatives before substitution.