Piezo Ceramic Microphones :: Knowles

Piezo Ceramic Microphones

  • Ceramic vibration designs
  • High vibration sensitivity
  • High resistance to mechanical shock

The piezo ceramic microphone series is rugged, stable, and versatile. Design variables include standard, thin, or a one-half inch cylindrical shell with a cable assembly. Both communication and broadband frequency responses are available. The series features high vibration sensitivity and may be used as accelerometers.

 

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Model Id Dimensions 1 kHz sensitivity Port location Noise Max (Input Ref.) Noise Max (Output Noise)
BL-21671-000 7.92mm x 5.59mm x 2.28mm (.312in x .220in x .090in) -54.5 12S 32 dB n/a
BL-21785-000 7.92mm x 5.59mm x 2.28mm (.312in x .220in x .090in) -69 12S 34 dB n/a
BL-21994-000 7.92mm x 5.59mm x 2.28mm (.312in x .220in x .090in) -69 Top 34 dB n/a
BL-23497-000 7.92mm x 5.59mm x 2.28mm (.312in x .220in x .090in) -69 Top 34 dB n/a