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 microphone1/4 "
      applicationpressure field
      Sensitivity in the open circuit0.25 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 level194 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/°F0.007 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 voltage0 V[3]
      physical properties
      housing material Stainless alloy
      pressureback
      mounting thread (for amp)0,2244 "-60 UNS5.7 mm -. 60 UNS
      mounting thread (for cover)0.25 "-60 UNS6,35 mm - 60 UNS
      size - diameter (with cap)0.28 in7.0 mm
      Size - diameter (without protection cap)0.25 in6.4 mm
      size - height (with cap)0.41 in10.4 mm
      size - height (without protection cap)0.36 in9.1 mm
      mass0.06 oz1.7 grams[1]
      Instructions
      [1]typically
      [2]based on 250 Hz
      [3]Prepolarized
      Accessories
      ACS-20calibration 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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