EM-9745

Electrical Characteristics Sensitivity Symbol: S EM ELECTRET CONDENSER MICROPHONE Acoustic Product Specification Product Number: EM-9745 Unit: dB Condition: 0dB=1V/Pa at 1kHz Center: -42 Limits: Min: -45 Max: -39 Output impedance Symbol: Z out Unit: KΩ Condition: f=1kHz Limits: Max: 2.2 Current Consumption Symbol: IDSS Unit: µA Condition: VCC =3.0V, RL=2.2KΩ Limits: Max: 500 Signal to Noise Ratio Symbol: S/N Unit: dB Condition: at 1kHz S.P.L=1Pa (A-Weighted Curve) Release | Revision: C/2018 Limits: Min: 58 Decreasing Voltage Symbol: ΔS CONTENTS This document contains the technical specifications for the omni directional back electret condenser microphone. Page 1 Electrical Characteristics Unit: dB Condition: VCC= 3.0V to 2.0V Limits: Max: -3 Operating Voltage Unit: V Limits: Min: 1.0 Max: 10 Page 2 Typical Frequency Response Curve Measurement Circuit Page 3 Measurement Setup Drawing Product External and Dimensions Page 4 Exploded Drawing Material Table Maximum input S.P.L Unit: dB Limits: Max: 110 Testing condition Temperature: 20±2℃ Humidity: 65±5% Dimension Page 5 Temperature Conditions Reliability Test Ø9.7 x 4.5 mm IP Level Page 6 Soldering Condition Heat Sink IP50 Page 7 Packing 1 www.soberton.com Typical Frequency Response Curve Frequency Response EM ELECTRET CONDENSER MICROPHONE Acoustic Product Specification Product Number: EM-9745 Microphone Response Tolerance Window Frequency(Hz) Release | Revision: C/2018 CONTENTS This document contains the technical specifications for the omni directional back electret condenser microphone. 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 Page 1 Electrical Characteristics Page 2 Typical Frequency Response Curve Measurement Circuit Page 3 Measurement Setup Drawing Product External and Dimensions Measurement Circuit RL = 2.2KΩ Vs = 3.0V C = 1µF Page 4 Exploded Drawing Material Table Page 5 Temperature Conditions Reliability Test Page 6 Soldering Condition Heat Sink Page 7 Packing 2 www.soberton.com Exploded Drawing and Material Table EM ELECTRET CONDENSER MICROPHONE Acoustic Product Specification Product Number: EM-9745 Release | Revision: C/2018 CONTENTS This document contains the technical specifications for the omni directional back electret condenser microphone. Page 1 Electrical Characteristics Page 2 Typical Frequency Response Curve Measurement Circuit Page 3 Measurement Setup Drawing Product External and Dimensions No. Part 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 Housing Chamber 1 7 Copper Ring 1 8 PCB 9 FET FR-4 Remark 1 1 Page 4 Exploded Drawing Material Table Page 5 Temperature Conditions Reliability Test Page 6 Soldering Condition Heat Sink Page 7 Packing 3 www.soberton.com Temperature Conditions Operating Temperature Range -40℃~+85℃ Storage Temperature Range EM ELECTRET CONDENSER MICROPHONE -40℃~+85℃ Note: Store in electronic warehouse. Reliability Test Acoustic Product Specification Product Number: EM-9745 After each of the following tests, the sensitivity of the microphone should be within ±3dB of initial sensitivity after 3 hours of conditioning at 20℃. Vibration Test Frequency : 10Hz~55Hz Amplitude: 1.52mm Change of Frequency : 1 octave/min 2 hours in each of axis High Temperature Test Release | Revision: C/2018 +85℃ for 240 hours. Low Temperature Test -40℃ for 240 hours. CONTENTS This document contains the technical specifications for the omni directional back electret condenser microphone. Page 1 Electrical Characteristics Page 2 Typical Frequency Response Curve Measurement Circuit Page 3 Measurement Setup Drawing Product External and Dimensions Humidity Test 90%～95%RH,+80℃ for 240 hours. Thermal Shock Test –40°C, 30 minutes ↔ +85°C, 30 minutes, repeated 32 cycles → room temperature, 3 hours. Temperature Cycles -40℃ ↔ +20℃ ↔ +85℃ ↔ +20℃ ↔ (2h) (0.5h) (2h) (0.5h) (2h) (0.5h) -40℃ (2h) (0.5h) (2h) for 5 cycles. Packing Drop Test Height: 1.5m Page 4 Exploded Drawing Material Table Page 5 Temperature Conditions Reliability Test Page 6 Soldering Condition Heat Sink Procedure: 5 times from each of axis Electrostatic Discharge Tested to IEC61000-4-2 level 3: a) Contact Discharge: The microphone shall operate normally after 10 discharges to is 6KV DC and the discharge network is 150pF and 330Ω. b) Air Discharge: The microphone shall operate normally after 10 discharges to is 8KV DC and the discharge network is 150pF and 330Ω Page 7 Packing 4 www.soberton.com Measurement Setup Drawing EM ELECTRET CONDENSER MICROPHONE Acoustic Product Specification Product Number: EM-9745 Product External and Dimension Unit: mm Release | Revision: C/2018 CONTENTS This document contains the technical specifications for the omni directional back electret condenser microphone. Page 1 Electrical Characteristics Page 2 Typical Frequency Response Curve Measurement Circuit Page 3 Measurement Setup Drawing Product External and Dimensions Page 4 Exploded Drawing Material Table Page 5 Temperature Conditions Reliability Test Page 6 Soldering Condition Heat Sink Page 7 Packing 5 www.soberton.com Soldering Condition We suggest using anti-static welding machine which can control soldering temperature automatically. EM ELECTRET CONDENSER MICROPHONE Soldering temperature should be controlled under 320℃ and soldering time for each terminal should be 1~2 seconds. Acoustic Product Specification Microphone may easily be destroyed by the static electricity. The countermeasure for eliminating the static electricity shall be by grounding the worktable and operator. Product Number: EM-9745 Microphone should be fixed on the metal block (heat sink), which has high radiation effects, and heat sink shall contact with MIC tightly. Heat Sink Shape of heat sink Release | Revision: C/2018 CONTENTS This document contains the technical specifications for the omni directional back electret condenser microphone. Page 1 Electrical Characteristics Page 2 Typical Frequency Response Curve Measurement Circuit Shape of hole at fixed part Page 3 Measurement Setup Drawing Product External and Dimensions Page 4 Exploded Drawing Material Table Page 5 Temperature Conditions Reliability Test Page 6 Soldering Condition Heat Sink Page 7 Packing 6 www.soberton.com Packing EM ELECTRET CONDENSER MICROPHONE Acoustic Product Specification Product Number: EM-9745 Release | Revision: C/2018 CONTENTS This document contains the technical specifications for the omni directional back electret condenser microphone. Page 1 Electrical Characteristics Page 2 Typical Frequency Response Curve Measurement Circuit Page 3 Measurement Setup Drawing Product External and Dimensions Page 4 Exploded Drawing Material Table Page 5 Temperature Conditions Reliability Test Page 6 Soldering Condition Heat Sink Details Dimension: (length x width x height) unit: mm Anti-Static Foam: 100 x 100x 10mm Middle Box: 205 x 105 x 50mm Carton Size: 550 x 230 x 235mm Quantity and Weight Small Box: 100 pcs Middle Box: 1,000 pcs Carton: 20,000 pcs 1PC: 0.7g Net Weight: 14.0kg Gross Weight: 17.0kg Page 7 Packing 7 www.soberton.com