Page 1
Acoustics & Sensor
SPECIFICATION
FOR ELECTRO-MAGNET DYNAMIC MICROPHONE
Customer
Date
Page
Approval:
28 Apr.10
01 of 06
06TOTAL PAGE
www.be-star.com
Model Name
Product No.Customer P/N
Issue No.
Issue Date
BCM9767OFCF-38 LF
195037
BS/TEM01.154A
10.04.28
RoHS
1.Characteristics
2.Drawing
3.Measurement Circuit
4.Reliability Test
5.Packing
6.History change record
Drawn by
Checked by
Approved by
Customer approved
BESTAR ELECTRONICS INDUSTRY CO.,LTD
No.199 HuangHe West Road.New district,ChangZhou,JiangSu Province,P.R.China
Tel: +86 519 88222567 Fax: +86 519 88222551
www.bestargroups.com info@be-star.com http://www.bestargroups.com
Page 2
Acoustics & Sensor
6 5 34 2
H
BCM9767OFCF-38 LF
1. Characteristics
Test Condition (Vs=4.5V RL=2.2Kohm Ta=20 C R.H.=65%)
G
No. Item Specifications
1 Sensitivity -38 3dB(0dB=1V/μBar,1kHz)
2 Impedance 2.2kohm at 1KHz
F
3 Current Consumption 0.5mA Max.
4 Standard operation voltage 1.0-10V
5 Directional Omnidirectional
6 S/N Ratio more than 55dB(0dB=1V/ μBar,1kHz)
1
H
G
F
E
E
8 Frequency Response 50Hz~16kHz
9 Decreasing Voltage Characteristic -3dB(Vs=3.0V-2.0V)
10 Weight Less than 1.3g
7 Max. Input Sound Level 115dB S.P.L
D
D
★Frequency Resonse Curve
and shall not be used in whole or in part without its written content
This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.
B
+20
+10
+3
+3
0
0
-3
-3
-6
-10
-20
Sound Pressure Level (dB)
-30
20 50 100 200 500 1k 2k 5k 10k 20k
+8
CC
-8
B
Frequency(Hz)
Date:
Drawn by:
A
A
Rev.
10.04.28
Date
6
王焕焕
Drawn
Checked by:
Note
5
Approved by:
www.be-star.com wu@be-star.com
4
10.04.28
王焕焕
徐 波
张秀琴
BCM9767OFCF-38 LF
Microphone
DRG NO:
3
BS/TEM01.154A
2
Page:2 of 6
1
A
Page 3
Acoustics & Sensor
6 5 4 3 2
H
BCM9767OFCF-38 LF
★Angular Response
G
F
2.Drawing
1
H
150
120
90
60
30
180
210
G
220
270
300
330
0
F
E
filter
D
and shall not be used in whole or in part without its written content
Terminal 1 Output
Terminal 2 Ground
6.7 0.2
Ø9.7±0.2
0.2±0.1
E
D
Unit: mm
This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.
3.Measurement Circuit:
C
FET impedance
Converter
C1
ECM unit
B
10pFC233pF
Terminal 1
Terminal 2
RL=2.2K
Output
Power Supply 4.5V
-
Earth
+
C
B
Shield Case
Date:
Drawn by:
A
Rev.
10.04.28
Date
A
6
王焕焕
Drawn
Checked by:
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5
Approved by:
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4
10.04.28
王焕焕
徐 波
张秀琴
3 2
BCM9767OFCF-38 LF
Microphone
DRG NO:
BS/TEM01.154A
A
Page:3 of 6
1
Page 4
Acoustics & Sensor
6 5 4 3 2
H
1
H
BCM9767OFCF-38 LF
4.Reliability Test
G
F
E
D
and shall not be used in whole or in part without its written content
This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.
4.1 High temp.life test
Temperature +85 °C
Duration 100hrs
4.2 Low temp.life test
Temperature -40 °C
Duration 100hrs
4.3 Temperature cycle test
Cycles 10
+85 C
1hrs
1hrs
-40 C
1hrs
+20 C+20 C
1hrs
4.4 Humidity Test
Temperature +40 °C
Relative Humidity 90~95%
Duration 72hrs
Tests above should be measured after leaving normal temperature for 6hrs.
4.5 Vibration Test
Vibration Frequency 10~55Hz
Amplitude 1.52mm/min
Direction 3(x.y&z)
Duration 2hrs each cycle(total 6 hrs)
4.6 Drop test
Height 1m
(Dropped to 20mm thick hardwood board without packing.)
Direction 3
4.7 Soldering Heat Shock .
Temperature 260 ±5°c
Duration 2 ±0.5 sec
4.8 Terminal Mechanical Strength
Strength 1kg
Duration 1 min
G
F
E
D
CC
Notice:
All specifications must be satisfied in this condition.
B
A
A
Rev.
Sensitivity :Allowable deviation within ±3dB from initial sensitivity.
10.04.28
王焕焕
徐 波
张秀琴
3 2
10.04.28
Date
6
王焕焕
Drawn
Note
5 4
Date:
Drawn by:
Checked by:
Approved by:
www.be-star.com wu@be-star.com
BCM9767OFCF-38 LF
Microphone
DRG NO:
BS/TEM01.154A
B
A
Page:4 of 6
1
Page 5
Acoustics & Sensor
6 5 4 3 2
H
BCM9767OFCF-38 LF
5. Packing
G
F
1
H
G
F
E
E
TBD
D
and shall not be used in whole or in part without its written content
This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.
C
B
D
C
B
Date:
Drawn by:
A
Rev.
10.04.28
Date
A
6
王焕焕
Drawn
Note
5
Checked by:
Approved by:
www.be-star.com wu@be-star.com
4
10.04.28
王焕焕
徐 波
张秀琴
3 2
BCM9767OFCF-38 LF
Microphone
DRG NO:
BS/TEM01.154A
A
Page:5 of 6
1
Page 6
Acoustics & Sensor
6
BCM9767OFCF-38 LF
H
5 4
6. History change record
version
No.
G A
F
Before
Change Items
After
Date
10.04.28
3
Drawn
王焕焕
2 1
Approved
张秀琴
H
G
F
E
D
and shall not be used in whole or in part without its written content
This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.
B
E
D
CC
B
Date:
Drawn by:
A
Rev.
10.04.28
Date
A
6
王焕焕
Drawn
Note
5
Checked by:
Approved by:
www.be-star.com wu@be-star.com
4
10.04.28
王焕焕
徐 波
张秀琴
3 2
BCM9767OFCF-38 LF
Microphone
DRG NO:
BS/TEM01.154A
A
Page:6 of 6
1
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