For more information, please visit the product page. date 09/23/2013 page 1 of 4 MODEL: CMA-6542PF │ DESCRIPTION: ELECTRET CONDENSER MICROPHONE SPECIFICATIONS parameter conditions/description directivity omnidirectional sensitivity (S) f = 1 kHz, 1 Pa, 0 dB = 1 V/1 Pa min typ max units -45 -42 -39 dB 4.5 10 Vdc operating voltage output impedance (Zout) f = 1 kHz, 1 Pa 2.2 KΩ sensitivity reduction (∆S-Vs) f = 1 kHz, 1 Pa, Vs = 4.5 to 1.5 Vdc -3 dB frequency (f) 50 current consumption (IDSS) Vs = 4.5 Vdc, RL = 2.2 KΩ signal to noise ratio (S/N) f = 1 kHz, 1 Pa, A-weighted Hz 0.5 mA 60 operating temperature storage temperature dimension 20,000 dBA -20 70 °C -20 70 °C 0.7 g ø9.7 x 6.5 mm weight 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 = 2.2 KΩ FET Impedance converter Term.1 C=1μF Output RL E.C.M unit Shield Case Schematic Diagram cui.com +Vs Term.2 -Ground For more information, please visit the product page. CUI Inc │ MODEL: CMA-6542PF │ DESCRIPTION: ELECTRET CONDENSER MICROPHONE date 09/23/2013 │ page 2 of 4 FREQUENCY RESPONSE CURVE ijı IJı ĩťŃĪı ĮIJı Įijı ĮĴı ijı Ķı IJıı ijıı Ķıı IJŌ ijŌ ĶŌ IJıŌ ijıŌ ĩʼnŻĪ IJįıııŗİőł MECHANICAL CHARACTERISTICS item test condition evaluation standard soldering heat resistance Soldering iron of +260 ±5°C should be placed on the terminal for 2 ±0.5 seconds. No interference in operation. terminal mechanical strength Apply to the terminal 4.9 N (0.5 kg) for 1 minute No damage or cutting off. 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. 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. After any tests, the sensitivity should be within ±3 dB of the initial sensitivity. ENVIRONMENT TEST item test condition high temperature test After being placed in a chamber at +70°C for 72 hours. evaluation standard low temperature test After being placed in a chamber at -20°C for 72 hours. thermal shock After being placed in a chamber at +40°C and 90 ±5% RH for 240 hours. The part will be subjected to 10 cycles. One cycle will consist of: After any tests and 6 hours of conditioning at +25°C, the sensitivity should be within ±3 dB of the initial sensitivity. temperature cycle test TEST CONDITIONS standard test conditions a) Temperature: +5 ~ +35°C b) Humidity: 45 ~ 85% c) Pressure: 860 ~ 1060 mbar judgement test conditions a) Temperature: +25 ±2°C b) Humidity: 60 ~ 70% c) Pressure: 860 ~ 1060 mbar cui.com For more information, please visit the product page. CUI Inc │ MODEL: CMA-6542PF │ DESCRIPTION: ELECTRET CONDENSER MICROPHONE PACKAGING cui.com date 09/23/2013 │ page 3 of 4 For more information, please visit the product page. CUI Inc │ MODEL: CMA-6542PF │ DESCRIPTION: ELECTRET CONDENSER MICROPHONE date 09/23/2013 │ page 4 of 4 REVISION HISTORY rev. description date 1.0 initial release 06/06/2008 1.01 new template applied, updated drawing 06/26/2012 1.02 updated drawing 09/23/2013 The revision history provided is for informational purposes only and is believed to be accurate. Headquarters 20050 SW 112th Ave. Tualatin, OR 97062 800.275.4899 Fax 503.612.2383 cui.com [email protected] CUI offers a one (1) year limited warranty. Complete warranty information is listed on our website. CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use. CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.