BeStar BCM9750ULF-47 User Manual

SPECIFICATION

FOR ELECTRET CONDENSER MICROPHONE

Customer

Date
Page

Approval:

23 Mar. 09

01 of 06

06TOTAL PAGE

www.be-star.com

Model Name

Product No.Customer P/N
Issue No.

Issue Date

BCM9750ULF-47

191801

BS/TEM01.101B

09/03/23

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: [phone] Fax: [phone]

E-mail:[e-mail] http://www.be-star.com

2

1

H

BCM9750ULF-47

1. Characteristics
Test Condition (Vs=1.5V RL=680 Ω Ta=20℃ R.H.=65%)

G

No. Item Specifications
1 Sensitivity -47 ±3dB(0dB=1V/Pa,1kHz)
2 Frequency Response 100Hz-16kHz
3 Current Consumption 0.5mA Max.

F

E

4 Directional Umnidirectional
5 S/N Ratio more than 60dB
6 Standard Operating Voltage 1.5V
7 Operating Voltage 1V~10V
8 Sensitivity reduction within -3dB at 1.5V
9 Distortion 2%

H

G

F

E

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

D

★Frequency Response 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.

Relative Response (dB)

B

B

09.03.23

A

A

05.06.14

Rev. Drawn

Date

徐 波

王丽娟

180°

0°

Note

Frequency(Hz)

Date:
Drawn by:
Checked by:
Approved by:

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

09.03.23

徐 波

魏奉玲

陶红仲

BCM9750ULF-47

Microphone

DRG NO:BS/TEM01.101B

2

D

CC

B

A

Page:2 of 6

1

2

1

H

BCM9750ULF-47

★Angular Response

G

F

2. Drawing

filter

E

Terminal2 "-"

Black (Negative)
Red (Positive)

Lead wire 22-26 awg

Molex Wire to Board Crimp Terminal
Eng.#50011
Order #50011-8000
or 3Com approved equivalent
Molex Crimp Hsg Part #51004-0200

H

G

F

E

Terminal1 "+"

rubber grommet for microphone cartridge

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.

Side View of Connector

D

3. Measurement Circuit:

C

FET impedance
Converter

Terminal 1

C:1μF

Output

Power Supply 1.5V

ECM unit

B

RL=680

GND

Terminal 2

Shield Case

Date:

B

09.03.23

A

A

05.06.14

徐 波

王丽娟

Drawn by:

Checked by:

Approved by

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

09.03.23

徐 波

魏奉玲

陶红仲

BCM9750ULF-47

Microphone

DRG NO: BS/TEM01.101B

2

Page:3 of 6

1

C

B

A

2

1

H

H

BCM9750ULF-47

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

G

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.

09.03.23

徐 波

魏奉玲

陶红仲

09.03.23

05.06.14

Date

徐 波

王丽娟

Drawn

Note

Date:
Drawn by:
Checked by:
Approved by:

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

BCM9750ULF-47

Microphone

DRG NO:BS/TEM01.101B

2

B

A

Page:4 of 6

1

2

1

H

BCM9750ULF-47

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

09.03.23

A

A

05.06.14

Date

徐 波

王丽娟

Drawn

Note

Drawn by:
Checked by:
Approved by:

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

09.03.23

徐 波

魏奉玲

陶红仲

20 boxes for unit, 10 units per carton
Total 10000pcs per carton

Size: 24×24×29(cm)

BCM9750ULF-47

Microphone

DRG NO:BS/TEM01.101B

2

Page:5of 6

1

B

A

BCM9750ULF-47

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

09.03.23

Drawn

王丽娟

徐 波

Approved

郭 敏

陶红仲

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

09.03.23

A

Rev.

05.06.14

Date

A

徐 波

王丽娟

Drawn

Note

Drawn by:

Checked by:

Approved by:

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

09.03.23

徐 波

魏奉玲

陶红仲

BCM9750ULF-47

Microphone

DRG NO:BS/TEM01.101B

2

Page:6 of 6

1

D

C

B

A