Reliability test, Transducer – BeStar SMT5555-03H2.5LF User Manual
Page 4
3.1 high temperature test
Temperature +85
°C
Duration 240hrs
3.2 low temperature test
Temperature -40
°C
Duration 240hrs
3.3 life test in high temperature
Temperature +85
°C
Power supply 3.0Vo-p square wave 1/2 duty 3.1KHz
Duration 1000hrs
3.4 Temperature Cycles test 32
3.5 Humidity cycle test
Cycles 10
+85 C
30min
30min
-40
°C
3.Reliability Test
+25 C 90-95%RH
1h
12h
1h
+70 C 90-95%RH
3.6 Vibration
Frequency 10 ～200～10Hz
Amplitude 1.5mm
Direction X,Y&Z
Duration 2hrs each, total 6hrs
3.7 Fixed drop
Drop hight 152mm
Duration every 6 surface 5 times(total 30 times)
3.8 Drop test
Drop hight 100cm
Duration 6 every surface 1 time
3.9 Solderability
Solder temp. 255
±5°C
Soaking time 2
±0.5sec
1
2
3
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BS/TET01.552A
SMT5555-03H2.5 LF
SMT5555-03H2.5 LF
A
08/09/20
魏奉玲
08/09/20
魏奉玲
徐 波
陶红仲
10h
Note:All these tests above should be measured after leaving normal temperature for 4 hours.
Note:After the above tests, there should be no problems with appearance and performance
except S.P.L, S.P.L shall be 85dB or more .