PCB-377C20
- Prepolarized 1/2"-Präzisionsmikrofonkapsel
für Diffusfeldanwendungen, - Empfindlichkeit 50 mV/Pa,
- Dynamikbereich >144 dB,
- Frequenzbereich 3,15 … 16.000 Hz
| basic data | |||
| Nominal diameter of microphone | 1/2 " | ||
| application | diffuse-field | ||
| Sensitivity in the open circuit | 50 mV / PA | [3] | |
| sensitivity in the open circuit (±1. 5 dB) | -26 dB in relation to 1 V / PA | [3] | |
| Frequency range (± 1 dB) | 5 … 6,300 Hz | ||
| (±2 dB) frequency range | 3.15 … 16,000 Hz | ||
| lower limiting frequency (-3 dB) | 1.0 … 2.4 Hz | ||
| Resonance frequency | 12,000 Hz | [1] | |
| noise | < 15 dB(A) in relation to 20 µPa | ||
| dynamic range | > 144 dB in relation to 20 µPa | ||
| microphone type in accordance with IEC 61094-4 | WS2D | [2] | |
| conditions | |||
| Temperature range (operation) | -40 … 248 ° F | -40 … 120 ° C | |
| Temperature coefficient of sensitivity | 0,005 dB/°F | 0.009 dB / ° C | [3] [1] |
| Influenceby static pressure | -0.01 dB/kPa | [3] [1] | |
| Humidity coefficient of sensitivity | ±0, 001 dB/% RH | [3] | |
| influence by axial vibration | 63 dB in relation to 20 µPa | [1] | |
| technical characteristics | |||
| capacity | 11 pF | [1] | |
| Polarization voltage | 0 V | [4] | |
| physical properties | |||
| housing material | stainless steel alloy | ||
| pressure equalization | Rear | ||
| Mounting thread (amp) | 0,4606 60 UNS | 11,7 mm - 60 UNS | |
| mounting thread (cap) | 0,5 - 60 UNS | 12,7 mm - 60 UNS | |
| Size - diameter (with cap) | 0.52 in | 13.2 mm | |
| size - diameter (without protection cap) | 0.5 in | 12.7 mm | |
| Size - height (with cap) | 0.64 in | 16.2 mm | |
| size - height (without protection cap) | 0.6 in | 15.3 mm | |
| Mass | 0.28 oz | 7.8 grams | [1] |
| notes | |||
| [1] | typically | ||
| [2] | the tolerances of the Model 377C-20 are between 50 and 70% of the permissible deviations in accordance with this standard. | ||
| [3] | based on 250 Hz | ||
| [4] | Prepolarized | ||
| Accessories | |||
| ACS-20 | Calibration of a precision capacitor microphone | -1 |
PCB-377C20
