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HC-49/S SMD
1. SCOPE
CRYSTAL UNIT
This specification shall cover the characteristics of crystal unit with HC-49/S SMD 3.579545--27.00MHz 2. ELECTRICAL SPECIFICATION
ITEM HOLDER TYPE NOMINAL FREQUENCY LOAD CAPACITANCE OSCILLATION MODE FREQUENCY TOLERANCE AT 252 EQUIVALENT SERIES RESISTANCE DRIVE LEVEL OPERATING TEMPERATURE RANGE FREQUENCY STABILITY SHUNT CAPACITANCE AGING INSULATION RESISTANCE SPECIFICATION HC-49/S SMD 3.579545--27.00MHz 10PF to series Fundamental 30PPM Based on frequency 0.5MW -10~+60 30PPM 7PF max 5PPM/YEAR >500M at DC 100V
3. Dimension (mm)
H=4.0mm
Wing Shing Computer Components Co., (H.K.)Ltd. Homepage: http://www.wingshing.com Tel:(852)2341 9276 Fax:(852)2797 8153 E-mail: wsccltd@hkstar.com
HC-49/S SMD
4. MECHANICAL SPECIFICATION
CRYSTAL UNIT
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 90to 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(+2305)for 5 seconds Results: More than 95% of surface being tested should be coated uniformly with solder. 3) Vibration test Conditions:
Results:
Frequency 10 - 55Hz Amplitude 0.762mm Sweep 1.0 minute Duration 2 hours Frequency and wave form of tested products must Remain within specifications.
4) Drop test Conditions:
Results:
Method of drop Natural drop Dropping floor Hard wood board Height 30cm Number of drops 3 times Frequency and wave form of tested products must remain within specifications.
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 -202 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 +8520 Length of test 96 hours Deviation of frequency must be less than 3ppm
3) Salt spray test Conditions: Temperature +352 Length of test 48 hours NaCI % 5% Results: There should be no stain on surface of products. 4) Humidity test Conditions: Temperature +402 Relative humidity 90 - 95% Length of test 96 hours Results: a. Insulation resistance must be 500 M/100 Vac. minimum b. Resistance and wave form must remain within specifications.

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