EM-9745P

MODEL: EM-9745P-46 PRODUCT: Electret Condenser Microphone EDITION: A/2016 TYPE: OMNI DIRECTIONAL FOIL ELECTRET CONDENSER MICROPHONE ELECTRICAL CHARACTERISTICS Temperature =20±2 °C Humidity=65±5% parameter symbol condition sensitivity S 0dB=1V/Pa at 1kHz output impedance Z out current consumption limits unit min center max -49 -46 -43 dB f=1kHz 2.2 KΩ IDSS VCC =3.0V, RL=2.2KΩ 500 µA signal to noise ratio S/N at 1kHz S.P.L=1Pa (A-Weighted Curve) decreasing voltage ΔS VCC=3.0V to2.0V operating voltage 58 1.0 maximum input S.P.L dimension dB -3 dB 10 V 110 dB Ø9.7 x 4.5 mm TYPICAL FREQUENCY RESPONSE CURVE FREQUENCY RESPONSE MICROPHONE RESPONSE TOLERANCE WINDOW 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 MEASUREMENT CIRCUIT RL = 2.2KΩ Vs = 3.0V C = 1µF PAGE 1/5 MODEL: EM-9745P-46 PRODUCT: Electret Condenser Microphone EDITION: A/2016 TEMPERATURE CONDITIONS storage temperature range -40°C ~ +85°C operation temperature range -40°C ~ +85°C 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 conditioning at 20°C . vibration test frequency 10Hz ~ 55Hz amplitude 1.52mm change of frequency 1 octave/min 2 hours in each of axis high temperature test +70°C for 72 hours low temperature test -20°C for 72 hours humidity test 90% ~ 95%RH, +40°C for 240 hours temperature cycles -20°C (2h) +25°C (1h) (2h) +70°C (1h) (2h) +20°C (2h) for 10 cycles packing drop test height 1m 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 & 330Ω. air discharge The microphone shall operate normally after 10 discharges to is 8KV DC and the discharge network is 150pF & 330Ω 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 fixed on the metal block (heat sink) and 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 2/5 MODEL: EM-9745P-46 PRODUCT: Electret Condenser Microphone EDITION: A/2016 MEASUREMENT SETUP DRAWING PRODUCT EXTERNAL VIEW AND DIMENSION Unit : mm EXPLODED DRAWING AND MATERIAL TABLE Name Material Quantity 1 Dustproof gauze Non-weave cloth 1 2 Case Al-Mg alloy 1 3 Diaphragm 1 4 Spacer 1 5 Electret Plate 1 6 Chamber 1 7 PCB 1 8 FET 1 9 PIN 2 Remark FR4 PAGE 3/5 MODEL: EM-9745P-46 PRODUCT: Electret Condenser Microphone EDITION: A/2016 HEAT SINK SHAPE OF HEAT SINK SHAPE OF HOLE AT FIXED PART PAGE 4/5 MODEL: EM-9745P-46 PRODUCT: Electret Condenser Microphone EDITION: A/2016 PACKING DIMENSION: (LENGTH*WIDTH *HEIGHT) ANTI-STATIC SPONGE: 100mm*100mm*10mm SMALL PACKET: 100mm*100mm*17mm MIDDLE BOX: 450mm*280mm*135mm CARTON SIZE: 550mm*230mm*235mm QUANTITY AND WEIGHT 100PCS/Small Box 6000PCS/Mid Box 12000PCS/Per Carton 1PC=0.7g NET WEIGHT : 8.4kg GROSS WEIGHT : 12.0kg 100PCS X60 6000PCS X2 12000PCS PAGE 5/5