SPECIFICATION
08TOTAL PAGE www.be-star.com RoHS
Customer
Product No.Customer P/N
Model Name
Issue Date
Issue No. BS/TES01.990A
2012/02/01
SMS2020-08H4.5 LF
138707
Date
Page
01 Feb. 2012
01 of 08
Approval：
1.Description
2.Characteristics
3.Drawing
4.Reliability Test
5.Reflow Condition
6.Tape on Reel Packing
7.History Change Record
FOR DYNAMIC SPEAKER
博
士
達
Preliminary Specification For The Acoustic
Characteristics of Dynamic Speaker
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
E-mail:wu@be-star.com http://www.be-star.com
Checked by
Drawn by Customer approved
Approved by
This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.
and shall not be used in whole or in part without its written content
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1.Description
1.1 Upper sound port
1.2 Reflowable(Conforms to EIAJ ED-4702)
1.3 Flat frequency response with a greater sound volume
1.4 Excellent durability in severe environment(storage temperature:
-40°C to +105°C)
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A
2.Characteristics
2.1 Electrical and Mechanical Characteristics
No. Item Specification
1. Dimension 20 x 20 x 4.5 (square)
2. AC Impedance 8Ω±20%
3. Rated Input Power 0.5W(2.0Vrms)
4. Max Input Power 1.0W(2.83Vrms)
5. Resonance Frequency 850Hz ±20%
6. S.P.L 93±3dB/0.5W/0.1m at 0.8,1.0,1.5,2.0KHz average
7. THD 800Hz≤30%,800-1.5KHz slope from 10%,
1.5K-8KHz≤10%
8. Buzzes & Rattles Must be normal at sine wave 2.0Vrms
9. Polarity Positive voltage to (+),Diaphragm moves forward
10. Operating Temperature -40~+ 85°C
11. Storage Temperature -40~+ 105°C
12. Weight ~3.0g
Speaker
2012/02/01
2012/02/01
郭 敏
王文邦
王文邦 李红元
SMS2020-08H4.5 LF
DRG NO: BS/TES01.990A
SMS2020-08H4.5 LF
博
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Speaker Mic Audio
Analyser
Power Amplifier
10cm
0.5W(2.0Vrms)
2.2 Test Method
Anechoic chamber
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and shall not be used in whole or in part without its written content
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ASpeaker
郭 敏
王文邦
王文邦 李红元
SMS2020-08H4.5 LF
DRG NO: BS/TES01.990A
SMS2020-08H4.5 LF
2.3 Frequency Response Curve (only for reference)
Sound Pressure Level (dB)
70100
80
90
100
1K 2K
Frequency (Hz)
5K 10K 20K
A: Frequency Response Magn 0 dB re 20.00 μPa/V 1/12Oct
(%)
10
100
0
20
30
40
1K 2K 5K 10K 20K
110
2.4 Total Harmonic Distortion (only for reference)
Frequency (Hz)
min SPL
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2012/02/01
2012/02/01
This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.
and shall not be used in whole or in part without its written content
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ASpeaker
郭 敏
王文邦
王文邦 李红元
SMS2020-08H4.5 LF
DRG NO: BS/TES01.990A
SMS2020-08H4.5 LF
4.3 Low Temperature Test
Temperature -40±3°C
Duration 120hrs
4.1 Load Test
Power (Nom) 0.5W(sine wave)
Duration 120hrs
4.2 High Temperature Test
Temperature +105±3°C
Duration 120hrs
4. Reliability Test
3. Drawing
Unit:mm
Tolerance:±0.2
4.4 Temperature Cycle Test
Temperature -40°C/+85°C
Temperature Change 1±2/min
Duration at +85°C 2h(each cycle)
Duration at -40°C 2h(each cycle)
Duration for one cycle 8h
Cycle 10
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2012/02/01
2012/02/01
Dummy lead
Lead(-) Lead(+)
(sound port) (sound port)
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and shall not be used in whole or in part without its written content
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ASpeaker
郭 敏
王文邦
王文邦 李红元
SMS2020-08H4.5 LF
DRG NO: BS/TES01.990A
SMS2020-08H4.5 LF
2.After the test the part shall meet specifications without any degradation in
appearance and performance except SPL.SPL difference at 0.8-2kHz shall
be within ± 3dB from initial value after test.
Notice:
1.All these tests above should be measured after leaving normal temperature
for 2hrs.
4.5 Drop Test
Height 1.0m
Drop face Free drop on concrete floor
Times 3 (X,Y,Z direction 1 time each,
total 3 times)
5.Reflow Condition
5.1 reflow solding
Preheating: 215°C for 60-150 seconds
Soldering Temperature: 235°C for 20-40 seconds
Peak Soldering Temperature: 260°C max for 10 seconds
235°C
215°C
260°C
Temperature (°C)
Time (s)
Peak Temp.:260°C Max
120-150 30-40 50
150°C
60-80
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2012/02/01
2012/02/01
This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.
and shall not be used in whole or in part without its written content
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ASpeaker
郭 敏
王文邦
王文邦 李红元
SMS2020-08H4.5 LF
DRG NO: BS/TES01.990A
SMS2020-08H4.5 LF
A--A
A A
B
BB--B
The cover film peel strength force 0.1-0.7N
The cover film peel speed 300mm/min.
Cover Film
Components
★Dimensions of reel
★Dimensions of carrier tape
6.1 packing drawing
6. Tape on Reel Packing
Leader
Trailer
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2012/02/01
2012/02/01
This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.
and shall not be used in whole or in part without its written content
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ASpeaker
郭 敏
王文邦
王文邦 李红元
SMS2020-08H4.5 LF
DRG NO: BS/TES01.990A
SMS2020-08H4.5 LF
label about order info
BeStar
Date code:
Qty:
P/O:
Type:
label
6.2 packing quantity
6.3.1 300 pcs/reel
6.3.2 5 reel/carton
6.3.3 1500 pcs/carton in total
6.3.4 carton size 38x28x37cm
6.3.5 12 carton/tray
6.3.6 tray size 85x77x74cm
6.3 packing quantity
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2012/02/01
2012/02/01
This print and information there in are proprietary to Bestar Electronics Industry Co., Ltd.
and shall not be used in whole or in part without its written content
B
6
A
45 3
C
2 1
A
B
C
D
E
F
G
H
645 3
D
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12
www.be-star.com wu@be-star.com
Drawn by:
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Rev. Date Approved by:
Checked by:
Note
Date:
Page:08 of 08
ASpeaker
郭 敏
王文邦
王文邦 李红元
SMS2020-08H4.5 LF
DRG NO: BS/TES01.990A
SMS2020-08H4.5 LF
7. History Change Record
A
version
No. Before After
Change Items Date Drawn
2012/02/01
Approved
王文邦 郭 敏
博
士
達
2012/02/01
2012/02/01
