For more information, please visit the product page. date 11/07/2016 page 1 of 4 MODEL: CMC-9745-37T3 │ DESCRIPTION: ELECTRET CONDENSER MICROPHONE FEATURES • unidirectional • high signal to noise ratio • terminal mount SPECIFICATIONS parameter conditions/description directivity unidirectional sensitivity (S) f = 1 kHz, 1 Pa, 0 dB = 1 V/Pa min typ max units -40 -37 -34 dB standard operating voltage (Vs) 1.5 max operating voltage output impedance (Zout) f = 1 kHz, 1 Pa sensitivity reduction (∆S-Vs) f = 1 kHz, 1 Pa, Vs = 1.5 ~ 1.0 Vdc 1.4 frequency (f) 2.0 Vs = 1.5 Vdc, RL = 2.0 kΩ signal to noise ratio (S/N) f = 1 kHz, 1 Pa, A-weighted dimensions Ø9.7 x 4.5 material Al terminal solder pads Vdc 2.6 kΩ -3 100 current consumption (IDSS) Vdc 9 dB 12,000 Hz 0.4 mA 72 dBA mm weight 0.8 g operating temperature -20 70 °C storage temperature -20 70 °C RoHS Notes: 2011/65/EU 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 5~35°C, 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 cui.com For more information, please visit the product page. CUI Inc │ MODEL: CMC-9745-37T3 │ DESCRIPTION: ELECTRET CONDENSER MICROPHONE MECHANICAL DRAWING units: mm tolerance: ±0.2 mm FREQUENCY RESPONSE CURVE MEASUREMENT CIRCUIT RL = 2.0 kΩ C = 1 µF cui.com date 11/07/2016 │ page 2 of 4 For more information, please visit the product page. CUI Inc │ MODEL: CMC-9745-37T3 │ DESCRIPTION: ELECTRET CONDENSER MICROPHONE date 11/07/2016 │ page 3 of 4 PACKAGING units: mm Inner Box Size: 100 x 100 x 7 mm Middle Box Size: 205 x 105 x 54 mm Outer Box Size: 210 x 210 x 280 mm Inner Box QTY: 100 pcs per box Middle Box QTY: 1,000 pcs per box Outer Box QTY: 10,000 pcs per box Lot No. XXXXXXXXXX Model No. CUI Inv#.XXXXXXXXXXX CUI Part#.XXXXXXXXXX Quantity. XXXX Pcs Date: DD MM YY MADE IN CHINA G CUI Inc * T he label sticked on inner boxes and the outer of carton cui.com For more information, please visit the product page. CUI Inc │ MODEL: CMC-9745-37T3 │ DESCRIPTION: ELECTRET CONDENSER MICROPHONE date 11/07/2016 │ page 4 of 4 REVISION HISTORY rev. 1.0 description date initial release 11/07/2016 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.