Omnidirectional Back Electret Condenser Microphone Cartridge
WM-61A
●Small microphone for general use
●Back electret type designed for high resistance to vibrations,
●High sensitivity, high signal to noise ratio
●Solder type for leadwires
■Appearance
■Dimensional Drawing
3.4
Unit : mm
Term.1 Output
Φ6.0
Term.2 Ground
■Schematic Diagram
■Typical Frequency Response Curve
Output
+Vs
Rel at i v e Res pons e [ dB]
FET Impedance
converter
１μF
+20
+10
0
2.2kΩ
Ground
Mic Capsule
- 10
- 20
- 30
20
50
100
200
500
1k
2k
5k
10k
20k
Fr equenc y
[ Hz]
■Sensitivity
（0dB=1V/Pa,
1kHz）
Sensitivity
-35+/-4dB
Model No.
WM-61A
Vs=2.0V
RL=2.2kΩ
Specifications
Dimensions
Impedance
Frequency
Max operation voltage
Standard operation voltage
Current consumption
Sensitivity reduction
S/N ratio
Specifications are subject to change without notice.
6 x 3.4 mm
Less than 2.2kΩ
Omnidirectional
20-16,000Hz
10V
2V
Max 0.5mA
Within -3dB at 1.5V
More than 62dB
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