Additional Resources: Product Page 3D Model PCB Footprint date 01/08/2020 page 1 of 4 MODEL: CMC-9745-44P DESCRIPTION: ELECTRET CONDENSER MICROPHONE FEATURES omnidirectional pin mount 3 Vdc operating voltage SPECIFICATIONS parameter conditions/description min typ max units directivity omnidirectional sensitivity (S) f = 1 kHz, 1 Pa, 0 dB = 1 V/Pa -47 -44 -41 dB standard operating voltage (Vs) 3 Vdc max operating voltage 10 Vdc output impedance (Zout) f = 1 kHz, 1 Pa 2.2 k sensitivity reduction (S-Vs) f = 1 kHz, 1 Pa, Vs = 3.0 ~ 2.0 Vdc -3 dB frequency (f) 20 20,000 Hz current consumption (IDSS) Vs = 3.0 Vdc, RL = 2.2 k 0.5 mA signal to noise ratio (S/N) f = 1 kHz, 1 Pa, A-weighted 60 dBA dimensions 9.7 x 4.5 mm material Al terminal pin type weight 0.8 g operating temperature -20 70 C storage temperature -20 70 C RoHS yes Notes: 1. We use the Pascal (Pa) indication of sensitivity as per the recomendation of I.E.C. (International Electrotechnical Commission). The sensitivity of Pa will increase 20 dB compared to the ubar indication. Example: -60 dB (0 dB = 1 V/ubar) = -40 dB ( 1V/Pa) 2. All specifications measured at 5~35C, humidity at 45~85%, under 86~106 kPa pressure, unless otherwise noted. SOLDERABILITY parameter conditions/description min typ max units hand soldering for maximum 2 seconds 310 320 330 C cuidevices.comAdditional Resources: Product Page 3D Model PCB Footprint CUI Devices MODEL: CMC-9745-44P DESCRIPTION: ELECTRET CONDENSER MICROPHONE date 01/08/2020 page 2 of 4 MECHANICAL DRAWING units: mm FREQUENCY RESPONSE CURVE MEASUREMENT CIRCUIT RL = 2.2 k C = 1 F cuidevices.com