type: omni directional back electret condenser microphone electrical characteristics temperature =202 c humidity=655% parameter symbol condition limits unit min center max sensitivity s 0db=1v/pa at 1khz -45 -42 -39 db output impedance z out f=1khz 2.2 k current consumption i dss v cc =2.0v, rl=2.2k 500 a signal to noise ratio s/n at 1khz s.p.l=1pa (a-weighted curve) 58 db decreasing voltage s v cc =3.0v to 2.0v -3 db operating voltage 1.0 10 v maximum input s.p.l 115 db dimension ?6.0 x 2.7mm (lw 25) typical frequency response curve measurement circuit page 1/6 frequency response microphone response tolerance window rl = 2.2k vs = 2.0v c1 = 10pf c2 = 33pf c = 1f frequency(hz) lower limit(db) upper limit(db) 50 -6 +3 100 -3 +3 800 -3 +3 1000 0 0 1200 -3 +3 3000 -3 +8 5000 -3 +8 10000 -8 +8 model: EM6027LW-42C product: omni directional back electret condenser microphone edition: a/2017
temperature conditions storage temperature range -40c ~ +85c operation temperature range -40c ~ +85c note: store in electronic warehouse. reliability test after each of the following tests, the sensitivity of the microphone should be within 3db of initial sensitivity after 3 hours of conditioning at 20c . vibration test frequency 10hz ~ 55hz amplitude 1.52mm change of frequency 1 octave/min 2 hours in each of axis high temperature test +85c for 240 hours low temperature test -40c for 240 hours humidity test 90% ~ 95%rh, +60c for 240 hours thermal shocking test C40c, 30 minutes +80c, 30 minutes, repeated 32 cycles room temperature, 3 hours temperature cycles -40c +20c +85c +20c -40c (2h) (0.5h) (2h) (0.1h) (2h) (0.5h) (2h) (0.5h) (2h) for 5 cycles packing drop test height 1.5m procedure 5 times from each of axis electrostatic discharge tested to iec61000-4-2 level 3 contact discharge the microphone shall operate normally after 10 discharges to is 6kv dc and the discharge network is 150pf & 330. air discharge the microphone shall operate normally after 10 discharges to is 8kv dc and the discharge network is 150pf & 330 ip level ip67 soldering condition we suggest using an anti-static welding machine which can control soldering temperature automatically. soldering temperature should be controlled at under 320 c and soldering time for each terminal should be 1~2 seconds. microphone should be fxed on the metal block (heat sink)and the heat sink shall contact with mic tightly. microphone may easily be damaged by the static electricity. the countermeasure for eliminating the static electricity shall be by grounding both the worktable and the operator. page 2/6 model: EM6027LW-42C product: omni directional back electret condenser microphone edition: a/2017
measurement setup drawing product external view and dimension unit : mm exploded drawing and material table page 3/6 name material quantity 1 felt non-weave cloth 1 2 case al-mg alloy 1 3 polarized diaphragm 1 4 spacer 1 5 electret back 1 6 chamber 1 7 copper ring 1 8 pcb fr-4 1 9 chip capacitor 10+33pf 2 10 fet 1 model: EM6027LW-42C product: omni directional back electret condenser microphone edition: a/2017
accessory drawing page 4/6 model: EM6027LW-42C product: omni directional back electret condenser microphone edition: a/2017
heat sink page 5/6 shape of heat sink shape of hole at fixed part model: EM6027LW-42C product: omni directional back electret condenser microphone edition: a/2017
packing page 6/6 dimension:(length*width *height) anti-static bag : 100mm*100mm*2mm small box : 100mm*100mm*10mm middle box : 205mm*105mm*50mm carton size : 550mm*230mm*235mm quantity and weight 100pcs/small box 1000pcs/mid box 20000pcs/carton 1pc=0.2g net weight: 4.0kg gross weight: 8.0kg x1 100pcs 1000pcs 20000pcs x10 x20 model: EM6027LW-42C product: omni directional back electret condenser microphone edition: a/2017
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