Electrical Characteristics
Sensitivity
Symbol: S
EM ELECTRET
CONDENSER
MICROPHONE
Acoustic Product Specification
Product Number: EM-4015-BC
Unit: dB
Condition: 0dB=1V/Pa at 1kHz
Center: -48
Limits: Min: -51
Max: -45
Output impedance
Symbol: Z out
Unit: KΩ
Condition: f=1kHz
Limits: Max: 2.2
Current Consumption
Symbol: IDSS
Unit: µA
Condition: VCC =2.0V, 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: B/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
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
Unit: dB
Condition: VCC=3.0V to 2.0V
Limits: Max: -3
Operating Voltage
Unit: V
Limits: Min: 1.0 Max: 10
Maximum input S.P.L
Unit: dB
Limits: Max: 115
Testing condition
Temperature: 20±2℃
Humidity: 65±5%
Dimension
Ø4.0 x 1.5mm
IP Level
IP50
Page 7
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Typical Frequency Response Curve
Frequency Response
EM ELECTRET
CONDENSER
MICROPHONE
Acoustic Product Specification
Product Number: EM-4015-BC
Standard Test Fixture
Frequency(Hz)
Release | Revision: B/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
12000
-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 = 2.0V C1 = 10pF C2 = 33pF C = 1µF
Page 4
Exploded Drawing
Material Table
Page 5
Temperature Conditions
Reliability Test
Page 6
Soldering Condition
Heat Sink
Page 7
Packing
2
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Measurement Setup Drawing
EM ELECTRET
CONDENSER
MICROPHONE
Acoustic Product Specification
Product Number: EM-4015-BC
Product External and Dimension
Unit: mm
Release | Revision: B/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
3
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Exploded Drawing and Material Table
EM ELECTRET
CONDENSER
MICROPHONE
Acoustic Product Specification
Product Number: EM-4015-BC
Release | Revision: B/2018
No.
Part Name
Material
Quantity
1
Dustproof Gauze
Waterproof Cloth
1
2
Case
1
3
Diaphragm
1
4
Spacer
1
Page 2
Typical Frequency Response Curve
Measurement Circuit
5
Electret Plate
1
6
Chamber
1
Page 3
Measurement Setup Drawing
Product External and Dimensions
7
Copper Ring
1
8
PCB
1
Page 4
Exploded Drawing
Material Table
9
FET
1
10
Capacitor
2
CONTENTS
This document contains the technical
specifications for the omni directional
back electret condenser microphone.
Page 1
Electrical Characteristics
Remark
10pF + 33pF
Page 5
Temperature Conditions
Reliability Test
Page 6
Soldering Condition
Heat Sink
Page 7
Packing
4
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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-4015-BC
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: B/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
Humidity Test
90%~95%RH,+60℃ for 240 hours.
Thermal Shock Test
–40°C, 30 minutes ↔ +80°C, 30 minutes, repeated 32 cycles →
room temperature, 3 hours.
Temperature Cycles
-40℃
↔ +20℃ ↔ +85℃ ↔ +20℃ ↔ -40℃
(2h) (0.5h)
Page 3
Measurement Setup Drawing
Product External and Dimensions
(2h)
( 0.5h) (2h) (0.5h) (2h) (0.5h) (2h) for 5 cycles.
Packing Drop Test
Height: 1.5m
Page 4
Exploded Drawing
Material Table
Procedure: 5 times from each of axis
Electrostatic Discharge
Page 5
Temperature Conditions
Reliability Test
Page 6
Soldering Condition
Heat Sink
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
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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-4015-BC
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: B/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
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Packing
EM ELECTRET
CONDENSER
MICROPHONE
Acoustic Product Specification
Product Number: EM-4015-BC
Release | Revision: B/2018
CONTENTS
This document contains the technical
specifications for the omni directional
back electret condenser microphone.
Details
Dimension: (length x width x height) Unit: mm
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
Anti-Static Bag:
80 x 80 x 2mm
Small Packet:
80 x 80 x 10mm
Middle Box:
175 x 85 x 50mm
Carton Size:
550 x 230 x 235mm
Quantity and Weight
Small Box: 100 pcs
Middle Box: 1,000 pcs
Carton: 30,000 pcs
1PC: 0.1g
Net Weight: 3.0kg
Gross Weight: 7.0kg
Page 7
Packing
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