TM-26613-D20

Overview

The Knowles TM-26613-D20 is an electret condenser microphone designed for analog audio signal capture. It features a unidirectional polar pattern with side port location, suitable for targeted sound pickup applications. The device operates at a rated voltage of 1.3 V and presents an impedance of 4.4 kOhms. Its frequency response spans from 100 Hz to 5.8 kHz, providing adequate bandwidth for voice communication tasks. The sensitivity is specified as -55dB ±3dB when measured at 74dB SPL. Physical dimensions include a maximum height of 0.068 inches (1.73mm), utilizing solder pads for termination.

Feature Summary

• Electret condenser transducer technology for analog output
• Unidirectional acoustic design with side-mounted port
• Low-profile surface mount construction with solder pad termination

Applications

• Voice recognition systems requiring directional pickup
• Portable electronic devices with limited internal volume
• Communication equipment operating within specified frequency range

Procurement Notes

Verify the specific suffix D20 against official Knowles documentation to confirm exact physical dimensions and termination style. Ensure compatibility with existing PCB footprints regarding the 1.73mm maximum height constraint. Confirm RoHS compliance status through current manufacturer notifications prior to final procurement decisions.

Selection Notes

Select this component when a unidirectional electret microphone is required for analog signal processing. The 4.4 kOhm impedance and 1.3V rating must match the preamplifier input stage specifications. Consider the 5.8kHz upper frequency limit for applications not requiring high-fidelity wideband audio reproduction.

Part Context

This part belongs to the Knowles TM-26613 series of miniature microphones. The series typically offers various suffixes indicating different mechanical or electrical variations. The TM-26613-D20 specifically denotes the configuration with solder pad termination and defined acoustic characteristics.

Replacement Considerations

Consult official Knowles substitution guides for verified equivalents. Generic replacements may differ in sensitivity, impedance, or physical footprint. Verify that any substitute maintains the unidirectional pattern and compatible operating voltage.