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HC-49S

Wing Shing Computer Components
Part Number HC-49S
Manufacturer Wing Shing Computer Components
Description CRYSTAL UNIT
Published Mar 23, 2005
Detailed Description HC-49/S 1. SCOPE CRYSTAL UNIT This specification shall cover the characteristics of crystal unit with HC-49/U 3.579545...
Datasheet PDF File HC-49S PDF File

HC-49S
HC-49S

Overview
HC-49/S 1.
SCOPE CRYSTAL UNIT This specification shall cover the characteristics of crystal unit with HC-49/U 3.
579545—27.
00MHz 2.
ELECTRICAL SPECIFICATION ITEM HOLDER TYPE NOMINAL FREQUENCY LOAD CAPACITANCE OSCILLATION MODE FREQUENCY TOLERANCE AT 25℃±2℃ EQUIVALENT SERIES RESISTANCE DRIVE LEVEL OPERATING TEMPERATURE RANGE FREQUENCY STABILITY SHUNT CAPACITANCE AGING INSULATION RESISTANCE SPECIFICATION HC-49/U 3.
579545—27.
00MHz 10PF to series Fundamental ±30PPM Based on frequency 0.
5 MW -20℃~+70℃ ±30PPM <7PF ±5PPM/YEAR >500MΩ at DC 100V 3.
DIMENSION 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 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 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 solder ability test Conditions: Dipping in solder(+230℃±5℃)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 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 ...


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