page 1/5 type: omnidirectional smd electric 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 300 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 1.4 5.0 v maximum input s.p.l 110 db dimension ?6.0 x 2.2mm typical frequency response curve measurement circuit frequency response microphone response tolerance window rl = 2.2k vs = 2.0v c = 1f c1 = 10pf c2 = 33pf 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: EM-6022 product: electret condenser microphone
page 2/5 temperature conditions storage temperature range -40c ~ +75c operation temperature range -20c ~ +60c note: store in electronic warehouse. terminal mechanical strength terminal should be no interference in operation after pulled the terminal with 1kg for 1 minute. reliability test after each of following tests, the sensitivity of the microphone should be within 3db of initial sensitivity after 3 hours of condi - tioning at 20c . vibration test frequency 10hz ~ 55hz amplitude 1.52mm change of frequency 1 octave/min 2 hours in each of axis dry heat/cold +70c/-20c for 72 hours damp heat 90% ~ 95%rh,+40c for 240 hours temperature cycles -20c +25c +70c -20c (2h) (1h) (2h) (1h) (2h) (2h) x 10 cycles packing drop test height 1 m procedure 5 times from each of axis recommend assembly weld plate model: EM-6022 product: electret condenser microphone
page 3/5 test setup drawing product external view and dimension unit : mm exploded drawing and material table name material quantity remark 1 case copper 1 2 polarized diaphragm 1 3 spacer 1 4 electret back 1 5 housping chamber 1 6 copper ring 1 7 p.c.b 1 fr-4 8 chip capacitor 10+33pf 1 0402 9 fet 2 model: EM-6022 product: electret condenser microphone
page 4/5 reflow process condition the soldering profle depends on various parameters necessitating a set up for each application. the data here is given only for guidance on solder re-fow. there are four zones: preheat zone this zone brings the temperature at a controlled rate, typically 1~2.5c/s. equilibrium zone this zone brings the board to be a uniform temperature and also activates the fux. the dura - tion in this zone (typically 2~3 minutes) will need to be adjusted to optimize the out gassing of the fux. re-fow zone the peak temperature should be high enough to achieve good wetting but not so high as to cause component discoloration or damage (255cfor maximum 10 seconds). excessive solder - ing time can lead to inter-metallic growth which can result in a brittle joint. cooling zone the cooling rate should be fast, to keep the solder grains small which will give a longer lasting joint. typically will be 2~5c/s. sensitivity change should be within 3db after re-fow process and at room temperature for 30 minutes at least. model: EM-6022 product: electret condenser microphone
page 5/5 packing dimension delivery plate: 600pcs mid packet : 1800pcs paper case : 14400pcs weight & quantity 1 pc=0.25g net weight: 6.6kg gross weight: 7.5kg electret condenser microphone packing 600pcs 1800pcs x3 14400pcs x8 model: EM-6022 product: electret condenser microphone
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