The Panasonic WM-61A is a compact electret condenser microphone designed for professional audio applications requiring high-quality omnidirectional sound capture. This analog microphone belongs to the audio products category and represents a sophisticated solution for space-constrained electronic designs where reliable audio input is essential.
This microphone addresses several critical design challenges in modern electronics, including the need for miniaturization without compromising audio quality, low power consumption for battery-operated devices, and consistent performance across varying environmental conditions. The electret condenser technology eliminates the need for external polarization voltage while maintaining excellent sensitivity and frequency response characteristics.
The WM-61A operates within a voltage range of 2V to 10V with a rated voltage of 2V, consuming only 500 microamperes of supply current, making it ideal for power-sensitive applications. The microphone features a frequency response range of 50 Hz to 15 kHz, providing clear reproduction of human speech and most musical content. With a sensitivity rating of -35dB ±4dB at 94dB SPL and a signal-to-noise ratio of 62dB, it delivers professional-grade audio capture with minimal background noise interference.
The physical design incorporates a circular form factor measuring 0.236 inches (6.00mm) in diameter with a maximum height of 0.134 inches (3.40mm), enabling integration into extremely compact devices. The top-port configuration optimizes acoustic pickup while the solder pad termination method ensures reliable electrical connections in manufacturing environments. The 2.2 kOhm impedance provides excellent compatibility with standard audio input circuits.
Primary advantages include exceptional miniaturization, low power consumption, wide operating voltage range, consistent omnidirectional pickup pattern, and robust construction suitable for high-volume manufacturing. The analog output eliminates the need for digital processing circuitry, reducing system complexity and cost while maintaining signal integrity.
This microphone demonstrates broad compatibility with various audio processing systems, microcontrollers, and analog-to-digital converters commonly used in consumer electronics, professional audio equipment, and industrial applications. The wide voltage range ensures compatibility with both low-voltage portable devices and higher-voltage professional equipment.
Application areas encompass hearing aids, wireless communication devices, voice recorders, conference systems, security equipment, automotive hands-free systems, smart home devices, wearable technology, medical monitoring equipment, and industrial noise measurement instruments. The omnidirectional pattern makes it particularly suitable for applications requiring 360-degree sound pickup or ambient audio monitoring.
Equivalent models and alternatives include the Panasonic WM-61B (similar specifications with different packaging options), Knowles
SPU0410LR5H-QB
(digital MEMS alternative), Infineon IM69D120 (digital MEMS with similar form factor), TDK InvenSense
SPU0410LR5H-QB
Knowles
MIC MEMS ANALOG OMNI -38DB
17338
ICS-40212
(analog MEMS microphone), CUI Devices CMC-4015-SMT (surface-mount electret condenser), Adafruit 1063 (electret microphone amplifier breakout), SparkFun SEN-12758 (electret microphone breakout), PUI Audio POM-3535P-C33-R (similar electret condenser), and various generic electret capsules from manufacturers like Primo, AKG, and Audio-Technica that offer comparable specifications in different form factors and mounting configurations.
ICS-40212
TDK InvenSense
MIC MEMS ANALOG OMNI -38DB
29208
WM-61A (1)
WM-61A Key Technical Attributes
Type: Electret Condenser
Direction: Omnidirectional
Voltage Range: 2V ~ 10V
WM-61A Packing Size
This model features a compact bulk package configuration, ideal for large-scale integration and streamlined shipping, with each unit measuring a diameter of 0.236 inches (6.00mm) and a maximum height of 0.134 inches (3.40mm). The cylindrical microphone structure is optimized for minimal space usage, making it suitable for PCB soldering. The port location is at the top, and termination is designed with solder pads to ensure secure electrical connectivity and simple assembly. The microphone also boasts efficient thermal management due to its small dimension and robust casing, minimizing thermal stress during operation. Electrical characteristics include a rated operating voltage of 2V, with full functionality across a wide 2V to 10V range, supporting a maximum supply current of 500μA and 2.2kΩ impedance.
WM-61A Application
Panasonic’s WM-61A is widely applied in voice recording systems, telecommunication devices, acoustic research apparatus, hearing aids, audio measurement tools, wireless microphones, and Voice-Controlled Internet of Things (IoT) projects. Its omnidirectional pick-up pattern and wide frequency response (50Hz–15kHz) make it suitable for both professional and consumer audio electronic products where consistent sound capture and analytical recording are required.
WM-61A Features
The WM-61A delivers analog output from a highly sensitive electret condenser membrane, registering -35dB ±4dB at a standard 94dB SPL, which ensures excellent sound capture functionality. Its omnidirectional pickup capability results in uniform acoustic responsiveness irrespective of the source direction, making it highly versatile for applications with variable or moving sound sources. The robust S/N ratio of 62dB ensures clarity by reducing background noise. The microphone presents a top-ported design for straightforward integration into compact enclosures. Low voltage operation broadens compatibility with a range of power supplies, making it suitable for battery-driven and portable equipment. Its circular shape and tiny footprint make allowed for dense mounting in array microphones or miniature acoustic sensing systems. The solder pad termination provides reliable and durable mechanical and electrical contact within circuits.
WM-61A Quality and Safety Features
Manufactured by Panasonic, the WM-61A is engineered for stable and long-term operation with strict adherence to industry standards. The high-grade casing ensures component integrity and electromagnetic shielding, reducing susceptibility to interference and mechanical damage. The electret condenser design provides continued reliability and sensitivity over prolonged usage. Quality control measures during the manufacturing process guarantee consistent batch-to-batch performance.
WM-61A Compatibility
This microphone module integrates seamlessly with modern analog audio circuits and front-end sensor interfaces. Its standard 2.2kΩ impedance matches common audio preamplifiers and sound-processing ICs, ensuring straightforward drop-in replacement for existing designs. It is also suitable for modular assembly with dev boards, embedded platforms, and custom PCBs without the need for specialized adaptors.
WM-61A Datasheet PDF
We provide the industry’s most comprehensive and up-to-date datasheet for Panasonic WM-61A on our website. For accurate technical reference and detailed electrical specifications, we highly recommend downloading the current official PDF datasheet directly from this page to support your design and integration decisions.
Quality Distributor
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