Model : 377A21 | Precision Condenser Microphone

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$ 790.00 USD
(Pricing valid in US only!)

1/2" prepoplarized random incidence condenser microphone, low sensitivity, high frequency

  • Nominal Microphone Diameter: 1/2"
  • Frequency Response Characteristic: Random Incidence
  • Frequency Range: (±2dB)4 to 25000 Hz
  • Dynamic Range: 162 dB re 20 µPa

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English: SI:
Performance
Nominal Microphone Diameter 1/2" 1/2"
Frequency Response Characteristic (at 0° incidence) Random Incidence Random Incidence
Open Circuit Sensitivity (±2 dB)(at 250 Hz) ) -38 dB re 1 V/Pa -38 dB re 1 V/Pa [2]
Open Circuit Sensitivity (at 250 Hz) 12.6 mV/Pa 12.6 mV/Pa [2]
Frequency Range (±2 dB) 4 to 25000 Hz 4 to 25000 Hz
Lower Limiting Frequency (-3 dB) 1 to 2.4 Hz 1 to 2.4 Hz
Resonant Frequency (90° Phase Shift) 21800 kHz 21800 kHz [1]
Inherent Noise 20 dB(A) re 20 µPa 20 dB(A) re 20 µPa [1]
Dynamic Range (3% Distortion Limit) 162 dB re 20 µPa 162 dB re 20 µPa [1] [2]
Environmental
Temperature Range (Operating) -40 to +248 °F -40 to +120 °C
Temperature Coefficient of Sensitivity (+14 to +122°F (-10 to +50°C)) .003 dB/°F .006 dB/°C [1] [2]
Static Pressure Coefficient -.004 dB/kPa -.004 dB/kPa [1] [2]
Humidity Coefficient of Sensitivity (0 to 100%, non-condensing) ±.002 dB/%RH ±.002 dB/%RH [1] [2]
Influence of Axial Vibration (0.1g (1 m/s²)) 67 dB re 20 µPa 67 dB re 20 µPa [1]
Electrical
Capacitance (Polarized) 14 pF 14 pF [1]
Polarization Voltage 0 V 0 V [3]
Physical
Housing Material Stainless Alloy Stainless Alloy
Venting Rear Rear
Mounting Thread (Preamplifier) 0.4606 - 60 UNS 11.7 mm - 60 UNS
Mounting Thread (Grid) 0.5 - 60 UNS 12.7 mm - 60 UNS
Size - Diameter (with grid) 0.52 in 13.2 mm
Size - Diameter (without grid) 0.50 in 12.7 mm
Size - Height (with grid) 0.50 in 12.7 mm
Size - Height (without grid) 0.46 in 11.8 mm
Weight 0.23 oz 6.5 gm [1]
* All specifications are at room temperature unless otherwise specified
.


Specification Notes


[1] Typical.
[2] re 250 Hz
[1] Typical.
[2] re 250 Hz
[1] Typical.
[3] Prepolarized
[1] Typical.
[4] See PCB Declaration of Conformance PS167 for details.


Accessories


Supplied
ACS-20 Calibration of precision condenser microphones 1


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