PCB-377A12
| 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
