Additional Resources: Product Page 3D Model date 01/17/2020 page 1 of 4 MODEL: CMC-9745-L100 DESCRIPTION: ELECTRET CONDENSER MICROPHONE FEATURES unidirectional high signal to noise ratio 100 mm lead wires SPECIFICATIONS parameter conditions/description min typ max units directivity unidirectional sensitivity (S) f = 1 kHz, 1 Pa, 0 dB = 1 V/Pa -40 -37 -34 dB standard operating voltage (Vs) 1.5 Vdc max operating voltage 9 Vdc output impedance (Zout) f = 1 kHz, 1 Pa 1.4 2.0 2.6 k sensitivity reduction (S-Vs) f = 1 kHz, 1 Pa, Vs = 1.5 ~ 1.0 Vdc -3 dB frequency (f) 100 12,000 Hz current consumption (IDSS) Vs = 1.5 Vdc, RL = 2.0 k 0.4 mA signal to noise ratio (S/N) f = 1 kHz, 1 Pa, A-weighted 69 dBA dimensions 9.7 x 4.5 mm material Al terminal wire leads weight 1 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 CUI Devices MODEL: CMC-9745-L100 DESCRIPTION: ELECTRET CONDENSER MICROPHONE date 01/17/2020 page 2 of 4 MECHANICAL DRAWING units: mm tolerance: 0.2 mm wire: UL1571 LF 30 AWG FREQUENCY RESPONSE CURVE MEASUREMENT CIRCUIT RL = 2.0 k C = 1 F cuidevices.com