PCB-377A12
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PCB-377A12

  • Prepolarized 1/4 "precision microphone capsule for pressure applications,
  • Sensitivity 0.25 mV / PA,
  • Dynamic range > 178 dB,
  • Frequency range 4 … 20,000 Hz
  • basic data
    Nominal diameter of microphone 1/4 "
    application pressure field
    Sensitivity in the open circuit 0.25 mV / PA [2]
    sensitivity in the open circuit (±3 dB) -72 dB in relation to 1 V / PA [2]
    Frequency range (±2 dB) 4 … 20,000 Hz
    Lower limiting frequency (-3 dB) 0,5 … 3.0 Hz
    resonance frequency (phase shift 90°) 48,900 Hz [1]
    Noise < 65 dB(A) in relation to 20 µPa
    dynamic range (for THD ≤ 3%) > 178 dB in relation to 20 µPa
    Maximum peak value of the sound pressure level 194 dB in relation to 20 µPa
    conditions of use
    temperature range (operation) -40 … 248 ° F -40 … 120 ° C
    Temperature coefficient of sensitivity (-10 … 70 ° C) 0,004 dB/°F 0.007 dB / ° C[2] [1]
    Influence of static pressure -0.001 dB/kPa [2] [1]
    humidity coefficient of sensitivity (0 … 100%, non-condensing) ±0. 001 dB / % RH [2]
    influence by axial vibration (0.1 g, 1 m/s²) 72 dB in relation to 20 µPa [1]
    technical characteristics
    capacities t (polarized) 4.6 pF [1]
    polarization voltage 0 V [3]
    physical properties
    housing material Stainless alloy
    pressure back
    mounting thread (for amp) 0,2244 "-60 UNS 5.7 mm -. 60 UNS
    mounting thread (for cover) 0.25 "-60 UNS 6,35 mm - 60 UNS
    size - diameter (with cap) 0.28 in 7.0 mm
    Size - diameter (without protection cap) 0.25 in 6.4 mm
    size - height (with cap) 0.41 in 10.4 mm
    size - height (without protection cap) 0.36 in 9.1 mm
    mass 0.06 oz 1.7 grams [1]
    Instructions
    [1] typically
    [2] based on 250 Hz
    [3] Prepolarized
    Accessories
    ACS-20 calibration of precision microphones -1
    PCB-377A12

    Specific References

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    377A12_drawing.PDF

    Technical drawing

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    377A12_manual.PDF

    Operating instructions

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    377A12_specs.PDF

    Technical data sheet

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