EM6018-BC, EM6018S-BC, EM6018P-BC Omnidirectional Back Electret Condenser Microphone Sensitivity 0dB = 1V/Pa. 1KHz Directivity Omnidirectional Impedance Low Impedance Current Consumption Max. 0.5mA Standard Operation Voltage 2.0V Sensitivity Reduction Within –3dB at 1.5V S/N Ratio More than 58dB Sensitivity Range -42 ± 4dB, -44 ± 4dB, -46 ± 4dB, -48 ± 4dB Typical Frequency Response Curve: Schematic Diagram: