WM-55D103

Overview

The Panasonic WM-55D103 is an analog electret condenser microphone designed for noise cancellation applications. It features a frequency range of 100 Hz to 10 kHz and operates within a voltage range of 1.5 V to 10 V, drawing a supply current of 500 µA. The device exhibits a sensitivity of -54 dB ±4 dB at 94 dB SPL and provides a signal-to-noise ratio of 58 dB. Its impedance is less than 680 Ohms. The component utilizes solder pad termination and has a circular shape with a diameter of 0.382 inches (9.70 mm) and a maximum height of 0.197 inches (5.00 mm).

Feature Summary

• Integrated noise cancellation capability for improved audio clarity in noisy environments.
• Analog output type suitable for direct interfacing with standard audio processing circuits.
• Top port location design facilitates optimal sound capture orientation.

Applications

• Noise-canceling communication devices
• Industrial audio recording equipment
• Professional conferencing systems

Procurement Notes

Verify the part status carefully as official records indicate this specific model may be discontinued or subject to product change notices. Confirm current availability through authorized distributors and check for any recent PCN documentation regarding manufacturing changes or end-of-life notifications before finalizing procurement plans.

Selection Notes

Select this component when high signal-to-noise ratio and active noise reduction are required for analog audio signals. Ensure the operating voltage remains within the 1.5 V to 10 V range and that the circuit can accommodate the specified 500 µA supply current. Verify mechanical fit against the 9.70 mm diameter and 5.00 mm height constraints.

Part Context

This microphone belongs to the WM-55 series from Panasonic Industry, specialized for analog noise-canceling applications. It is distinct from other series by its specific acoustic tuning for interference rejection. The component is manufactured under strict quality standards, ensuring consistent performance across production batches for professional audio use cases.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Consult manufacturer documentation for potential obsolescence management strategies or alternative series recommendations if this specific model is unavailable.

FAQ

What is the directivity pattern of the WM-55D103?

The component is designed with a noise-canceling characteristic, utilizing dual ports or internal acoustic tuning to reject ambient noise while capturing target sound sources.

Does the WM-55D103 support digital interfaces?

No, the WM-55D103 is an analog microphone that outputs an analog signal and does not feature digital interfaces such as I2C or PDM.