泰州福声电子科技有限公司
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电声产品专业制造商
FUSHENG ELECTRONICS------Acoustic Components Professional Manufacturer
3.
TESTING METHOD
测量方式
Standard Measurement conditions
Temperature:25±2℃ Humidity:45-65%
Acoustic Characteristics:
The oscillation frequency, current consumption and sound pressure are measured by the measuring
instruments shown below
In the measuring test, buzzer is placed as follows:
4. VOLTAGE / CURRENT / SOUND PRESSURE CHARACTERISTICS
FSD-4839
泰州福声电子科技有限公司
-----
电声产品专业制造商
FUSHENG ELECTRONICS------Acoustic Components Professional Manufacturer
5. RELIABILITY TEST
可靠性测试
NO.
1
ITEM
High Temperature
Test (Storage)
Low Temperature
Test (Storage)
TEST CONDITION AND REQUIREMENT
Afterbeingplacedin a chamberwith 80 2ºC for96 hoursand then
beingplacedin normalconditionfor2 hours.
Allowablevariationof SPLaftertest: 10dB.
AfterbeingPlacedin a chamberwith-30 2ºC for96 hoursand then
beingplacedin normalconditionfor2 hours.
Allowablevariationof SPLaftertest: 10dB.
AfterbeingPlacedin a chamberwith90-95%R.H.at 40 2ºC for96
hoursandthen beingplacedin normalconditionfor2 hours.
Allowablevariationof SPLaftertest: 10dB.
The part shall be subjected to 5 cycles. One cycle shall be consist of:
+70ºC
+25ºC
+25ºC
2
3
Humidity Test
4
Temperature Cycle
Test
-
20ºC
5
Drop Test
6
Vibration Test
7
Solderability
Test
Terminal Strength
Pulling Test
:
:
:
:
8
Allowablevariationof SPLaftertest: 10dB.
Dropon a hardwood boardof 4cm thick,anydirections,6 times,
at theheightof75cm.
Allowablevariationof SPLaftertest: 10dB.
Afterbeingappliedvibrationof amplitudeof 1.5mmwith 10 to 55 Hz
band of vibration frequency to each of 3 perpendicular directions for
2hours .
Allowablevariationof SPLaftertest: 10dB.
Lead terminals are immersed in rosin for 5 seconds and then
immersedin solderbathof +300 5ºC for3 1seconds .
90%min.leadterminalsshallbewet with solder
(Excepttheedgeofterminals).
Theforceof 9.8N(1.0kg)is appliedto each terminalin axialdirectionfor
10seconds.
No visible damage and cutting off.
a) Temperature: +5~ +35℃
a)
温度
: +5 ~ +35℃
a) Temperature : +25 ± 2℃
a)
温度
: +25 ± 2℃
b) Humidity : 45-85%
b)
湿度
: 45-85%
b) Humidity : 60-70%
b)
湿度
: 60-70%
c) Pressure : 860-1060mbar
c)
气压
: 860-1060mbar
c) Pressure : 860-1060mbar
c)
气压
: 860-1060mbar
TEST CONDITION.
Standard Test Condition
一般测试条件
Judgment TestCondition
争议时测试条件
FSD-4839