date page part number: description: 06/2010 1 of 4 electret condenser microphone CME-1538-100LB 20050 sw 112 th ave. tualatin, oregon 97062 phone 503 . 612 . 2300 fax 503 . 612 . 2383 www.cui.com specifications parameter conditions/description min nom max units directivity omnidirectional sensitivity f= 1 khz, 1pa 0 db= 1 v/pa -41 -38 -35 db operating voltage 2 10 v dc output impedance f= 1 khz, 1pa 2.2 k sensitivity reduction f= 1 khz, 1pa vs=2 v dc to 1.5 v dc -3 dba frequency 20 20,000 hz current consumption vs=2 v dc rl=2.2 k 0.5 ma signal to noise ration f= 1 khz, 1 pa a weighted 58 dba operating temperature -30 80 c storage temperature -30 80 c dimenstions ?4 x h1.5 mm weight 0.1 g material brass (au plating) terminal wire type rohs yes dustproof/waterproof level ip67, iec standard 529 edition 2.0 (1989) 0.2mm unless otherwise tolerance: specified black (-) red (+) 0.2 1.5 0.059 4.0 0.157 0.15 4.0 (2 plcs) 100.0 3.937 1.0 0.039 0.5 (2 plcs) 2.9 0.114 max appearance drawing
date page part number: description: 06/2010 2 of 4 electret condenser microphone CME-1538-100LB 20050 sw 112 th ave. tualatin, oregon 97062 phone 503 . 612 . 2300 fax 503 . 612 . 2383 www.cui.com ?? ? ? ? ?? ?? ?? ?? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? frequency response curve measurement circuit
date page part number: description: 06/2010 3 of 4 electret condenser microphone CME-1538-100LB 20050 sw 112 th ave. tualatin, oregon 97062 phone 503 . 612 . 2300 fax 503 . 612 . 2383 www.cui.com mechanical characteristics item test condition evaluation standard soldering heat resistance stripped wires are immersed in rosin for 5 seconds and then im- mersed in solder bath of 270 5c for 3 0.5 seconds. 90% min. stripped wires should be wet with solder (except edge of terminal). pcb wire pull strength the force of 4.9 n is applied for 30 sec. to double lead wire. no damage or cutting off. vibration test the microphone 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. the sensitivity should be within 3db compared with the initial measurement. drop test the microphone without packaging is subjected to 3 drops on each axis from the height of 100 cm onto a 20 mm thick wooden board. environment test item test condition evaluation standard high temperature test after being placed in a chamber at +80c for 1 hour. the microphone will be measured after being placed at +25c for 6 hours. the value of the oscillation frequency should be 10% compared to the initial measurements. the spl should be within 3db compared to the initial measurements. low temperature test after being placed in a chamber at -30c for 1 hour. humidity test 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: +80 : +25 : +25 : -30 : 1hr 0.5 hr 1hr 0.5 hr 1hr 0.5 hr 1hr 5.5 hrs 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
date page part number: description: 06/2010 4 of 4 electret condenser microphone CME-1538-100LB 20050 sw 112 th ave. tualatin, oregon 97062 phone 503 . 612 . 2300 fax 503 . 612 . 2383 www.cui.com packaging
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