Additional Resources: Product Page 3D Model PCB Footprint date 01/17/2020 page 1 of 4 MODEL: CMB-6544PF DESCRIPTION: ELECTRET CONDENSER MICROPHONE SPECIFICATIONS parameter conditions/description min typ max units directivity omnidirectional sensitivity (S) f = 1 kHz, 1 Pa, 0 dB = 1 V/1 Pa -47 -44 -41 dB operating voltage 4.5 10 Vdc output impedance (Zout) f = 1 kHz, 1 Pa 1 K sensitivity reduction (S-Vs) f = 1 kHz, 1 Pa, Vs = 4.5 ~ 1.5 Vdc -3 dB frequency (f) 20 20,000 Hz current consumption (LDSS) Vs = 4.5 Vdc, RL = 1 K 0.5 mA signal to noise ratio (S/N) f = 1 kHz, 1 Pa, A-weighted 60 dBA operating temperature -40 70 C storage temperature -40 70 C dimension 9.4 x 6.5 mm weight 0.7 g material AL terminal pin type (hand soldering only) RoHS yes note: 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 20dB compared to the ubar indication. Example: -60dB (0dB = 1V/ubar) = -40dB (1V/Pa) MECHANICAL DRAWING MEASUREMENT CIRCUIT unit: mm RL = 1.0 K 5.0 1.0 6.50.2 (2 PLCS) FET Impedance terminal 1 converter C=1F Term.1 Output RL 9.4 0.2 2.54 0.3 E.C.M 0.4 0.1 +Vs unit (2 PLCS) terminal 2 1.50.2 Shield Case Term.2 -Ground Schematic Diagram cuidevices.comAdditional Resources: Product Page 3D Model PCB Footprint CUI Devices MODEL: CMB-6544PF DESCRIPTION: ELECTRET CONDENSER MICROPHONE date 01/17/2020 page 2 of 4 FREQUENCY RESPONSE CURVE MECHANICAL CHARACTERISTICS item test condition evaluation standard soldering heat resistance Soldering iron of +270 5C should be placed on the No interference in operation. terminal for 2 0.5 seconds. PCB wire pull strength The pull force should be applid to double lead wire: No damage or cutting off. Horizontal 4.9 N (0.5 kg) for 30 seconds vibration test The part should be measured after a vibration amplitude of 1.5 mm with 10~55 Hz band of vibration frequency to each of the 3 perpendicular directions for 2 hours. After any tests, the sensitivity should be within 3 dB of the initial sensitivity. drop test The part without packaging is subjected to 3 drops on each axis from the height of 1 m onto a 20 mm thick wooden board. ENVIRONMENT TEST item test condition evaluation standard high temperature test After being placed in a chamber at +70C for 72 hours. low temperature test After being placed in a chamber at -20C for 72 hours. thermal shock After being placed in a chamber at +40C and 90 5% RH for 240 hours. temperature cycle test The part will be subjected to 10 cycles. One cycle will consist of: After any tests and 6 hours of conditioning at +25C, the sensitivity should be within 3 dB of the initial sensitivity. TEST CONDITIONS standard test conditions a) Temperature: +5 ~ +35C b) Humidity: 45 ~ 85% c) Pressure: 860 ~ 1060 mbar judgement test conditions a) Temperature: +25 2C b) Humidity: 60 ~ 70% c) Pressure: 860 ~ 1060 mbar cuidevices.com