
CRYSTAL UNIT
1. SCOPE
This specification shall cover the characteristics of crystal unit with
SMD0705-10.00—27.00MHz
2. ELECTRICAL SPECIFICATION
ITEM SPECIFICATION
HOLDER TYPE SMD0705
NOMINAL FREQUENCY 10.00—27.00MHz
LOAD CAPACITANCE 10PF to series
OSCILLATION MODE Fundamental
FREQUENCY TOLERANCE AT 25℃±2℃±30PPM
EQUIVALENT SERIES RESISTANCE
DRIVE LEVEL 0.5MW
OPERATING TEMPERATURE RANGE
FREQUENCY STABILITY
SHUNT CAPACITANCE <7PF
AGING
INSULATION RESISTANCE
40Ω max.
-10℃~+60℃
±30PPM
±5PPM/YEAR
>500MΩ at DC 100V
3
.
Dimension (mm)
Wing Shing Computer Components Co., (H.K.)Ltd. Tel:(852)2341 9276 Fax:(852)2797 8153
Homepage: http://www.wingshing.com E-mail: wsccltd@hkstar.com

4. MECHANI
1) Terminal Strength
* Lead pulling test
Conditions: Load 907.2 gram
Direction To the downward
Duration of applied force 5 seconds
Results: There should be no distortion in appearance.
* Lead bending test
Conditions: Load 453.6 gram
Bending angle 90°to normal position
Rate of bending 3 seconds in each cycle
Number of bending 3
Results: There should be no distortion in appearance.
2) Lead solderability test
Conditions: Dipping in solder(+230℃±5℃)for 5 seconds
Results: More than 95% of surface being tested should be
coated uniformly with solder.
CAL SPECIFICATION
3) Vibration test
Conditions: Frequency 10 – 55Hz
Amplitude 0.762mm
Sweep 1.0 minute
Duration 2 hours
Results: Frequency and wave form of tested products must
Remain within specifications.
4) Drop test
Conditions: Method of drop Natural drop
Dropping floor Hard wood board
Height 30cm
Number of drops 3 times
Results: Frequency and wave form of tested products must
remain within specifications.

5. ENVIRONMENTAL SPECIFICATION
1) Temperature test
* Temperature cycling test
Conditions: Steps of cycle 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
Results: 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: Temperature +85℃±20℃
Length of test 96 hours
Results: 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.
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.
4) Humidity test
Conditions: Temperature +40℃±2℃