WM-64K

Overview

The WM-64K is an analog omnidirectional electret condenser microphone manufactured by Panasonic Industry. It operates within a voltage range of 2 V to 10 V and draws a supply current of 500 µA. The device features a frequency response spanning 50 Hz to 15 kHz with a sensitivity of -45 dB ±4 dB at 94 dB SPL. It has a nominal impedance of 2.2 kΩ and utilizes a pad termination method. The physical dimensions are 6.00 mm in diameter and 2.20 mm in maximum height, designed for top-port mounting.

Feature Summary

• Omnidirectional acoustic pickup pattern for uniform sound capture from all directions
• Analog output signal generation suitable for standard audio processing circuits
• Compact cylindrical form factor designed for surface-mount or through-hole integration via pads

Applications

• Consumer electronic audio input devices
• Voice recognition systems requiring omnidirectional capture
• General-purpose analog microphone modules

Procurement Notes

Verify the part status as discontinued before procurement planning. Confirm that the pad termination style matches the target PCB layout design. Ensure the operating voltage requirements align with the system power supply constraints. Check for available replacement components if new designs are required.

Selection Notes

Select this component when an omnidirectional electret condenser microphone with analog output is required. Consider the specific sensitivity and frequency response characteristics for audio quality needs. Evaluate the physical size constraints against the available space on the printed circuit board. Verify compatibility with the intended biasing voltage range.

Part Context

This component belongs to the WM-64K series of microphones produced by Panasonic Industry. It is categorized under audio products specifically as a microphone. The series is characterized by its use of electret condenser technology for sound-to-electrical signal conversion.

Replacement Considerations

The document indicates the part status is discontinued. No specific public substitute part numbers are provided in the source material.