BeStar BCM9750NLF-52 User Manual

Electret Condenser Microphone

Customer

Customer P/N
BeStar Model Name
Product No.
Issue No.
Issue Date

Approval:

1.Characteristics

2.Drawing

3.Measurement Circuit

4.Reliability Test

5.Packing

6.History change record

Drawn by

Checked by

Approved by

BCM9750NLF-52
195021

BS/TEM01.139B

08/03/06

Customer approved

For conform to the European Union Directive on the Restriction of Hazardous Substances(RoHS), this type of
productions forbid use all the hazardous substances as follow:
Lead
Cadmium
Mercury
Hexavalent chromium
Polybrominated biphenyls (PBB)
Polybrominated diphenyl ethers (PBDE)

BESTAR ELECTRONICS INDUSTRY CO.,LTD

No.199 HuangHe West Road.New district,changzhou,

jiangsu Province,P.R.China

Tel:[phone] Fax:[phone]
Http:www.be-star.com
E-mail: [e-mail], [e-mail]

2

1

H

BCM9750NLF-52

1. Characteristics
Test Condition (Vs=2V RL=2.2KΩ Ta=20℃ R.H.=65%)

G

No. Item Specifications

1 Sensitivity -52±3dB(0dB=1V/Pa,1kHz)

2 Frequency Response 100Hz-10kHz
3 Current Consumption 0.5mA Max.

F

E

4 Directional Noise Cancelling
5 S/N Ratio more than 58dB
6 Standard Operating Voltage 2V
7 Operating Voltage 1V~10V
8 Sensitivity reduction within -3dB at 1.5V
9 Distortion 2%

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G

F

E

10 Storage Temperature -40°C to +70°C
11 Operating Temperature -30°C to +60°C

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.

L=1cm

CC

L=50cm

Relative Response (dB)

B

Frequency(Hz)

B

B

08.03.06

A

A

05.06.14

Rev. Drawn

Date

徐金国

王丽娟

Note

Date:
Drawn by:
Checked by:

Approved by:

08.03.06

徐金国

李毕佳

张秀琴

www.be-star.com [e-mail]

BCM9750NLF-52

Microphone

DRG NO:

BS/TEM01.139B

2

A

Page:1 of 5

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H

BCM9750NLF-52

★Angular Response

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F

2. Drawing

E

filter

Terminal2 "-"

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.

3. Measurement Circuit:

C

FET impedance
Converter

Terminal1 "+"

Terminal 1

C:1μF

Output

D

C

Power Supply 2.0V

ECM unit

RL=2.2K

GND

Terminal 2

B

B
A

A

Shield Case

08.03.06

05.06.14

徐金国

王丽娟

Date:
Drawn by:
Checked by:
Approved by

08.03.06

徐金国

李毕佳

张秀琴

www.be-star.com [e-mail]

BCM9750NLF-52

Microphone

DRG NO:

BS/TEM01.139B

2

Page:2 of 5

1

B

A

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H

H

BCM9750NLF-52

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

4.4 Humidity Test
Temperature +40 °C
Relative Humidity 90~95%
Duration 48hrs
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

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F

E

D

CC

Notice:
All specifications must be satisfied in this condition.

B

B
A

A

Rev.

Sensitivity :Allowable deviation within ±3dB from initial sensitivity.

08.03.06

徐金国

李毕佳

张秀琴

08.03.06

05.06.14

Date

徐金国

王丽娟

Drawn

Note

Date:
Drawn by:
Checked by:
Approved by:

www.be-star.com [e-mail]

BCM9750NLF-52

Microphone

DRG NO:

BS/TEM01.139B

2

B

A

Page:3 of 5

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H

BCM9750NLF-52

5. Packing

G

F

E

H

G

105

F

9

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.

C

D

C

Remark:

100 pcs per box

B

Date:

B

08.03.06

A

A

05.06.14

Date

徐金国

王丽娟

Drawn

Note

Drawn by:
Checked by:

Approved by:

www.be-star.com [e-mail]

08.03.06

徐金国

李毕佳

张秀琴

20 boxes for unit, 10 units per carton
Total 10000pcs per carton
Size: 24×24 ×29(cm)

BCM9750NLF-52

Microphone

DRG NO:

2

BS/TEM01.139B

Page:4 of 5

1

B

A

BCM9750NLF-52

H

6. History change record

2

1

H

version
No.

G

F

A

B

Before

Change Items

add packing data

After

Date

05.06.14

08.03.06

Drawn

王丽娟

徐金国

Approved

郭 敏

张秀琴

G

F

EE

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

Date:

B

08.03.06

A

Rev.

05.06.14

Date

A

徐金国

王丽娟

Drawn

Note

Drawn by:
Checked by:
Approved by:

www.be-star.com [e-mail]

08.03.06

徐金国

李毕佳

张秀琴

BCM9750NLF-52

Microphone

DRG NO:

BS/TEM01.139B

2

Page:5 of 5

1

D

C

B

A