HC-49/S SMD
5. ENVIRONMENTAL SPECIFICATION
1) Temperature test
* Temperature cycling test
Conditions: Steps of cycle
CRYSTAL UNIT
Results:
1) At -55℃,30 minutes
2) At +25℃,10 - 15 minutes
3) At +85℃,30 minutes
4) At +25℃,10 - 15 minutes
Number of cycles
3 times
Frequency and wave form of tested products must
remain within specifications.
*
Low Temperature test
Conditions:
Temperature
-20℃±2℃
Length of test
96 hours
Results:
There should be no stain on surface of products.
Frequency and wave form of tested products must
remain within specifications.
2) Aging test
Conditions:
Results:
Temperature
+85℃±20℃
Length of test
96 hours
Deviation of frequency must be less than
±3ppm
3) Salt spray test
Conditions:
Temperature
+35℃±2℃
Length of test
48 hours
NaCI %
5%
Results:
There should be no stain on surface of products.
4) Humidity test
Conditions: Temperature
+40℃±2℃
Relative humidity
90 - 95%
Length of test
96 hours
Results:
a. Insulation resistance must be 500 MΩ/100 Vac. minimum
b. Resistance and wave form must remain within specifications.
WINGS [ WING SHING COMPUTER COMPONENTS ]
