The hc49s 12mhz quartz crystal datasheet :
SPECIFICATION OF 49S QUARTZ CRYSTAL UNITS
| 1. HOLDER | DIP |
| 2. GENERAL | |
| 2-1 FREQUENCY (F0) | 12mhz |
| 2-2 MODE OF OSCILLATION (Mn) | FUNDAMENTAL(AT) |
| 2-3 OPERATION TEMPERATURE RANGE (T0) | -20℃~70℃ |
| 2-4 STORAGE TEMPERATURE RANGE (Ts) | -40℃~+85℃ |
| 2-5 TEST SET | S&A 250B Network Analyzer |
| 2-6 DRIVE LEVEL (DL) | 100μW/Max |
| 2-7 LOADING CAPACITANCE (CL) | 12pF |
| 3. ELECTRICAL CHARACTERISTICS | |
| 3-1 FREQUENCY TOLERANCE (△f) | ±30ppm/Max at 25±2℃ |
| 3-2 EQUIVALENT RESISTANCE (Rr) | 50Ω/Series |
| 3-3 TEMPERATURE DRIFT (TC) | ±50ppm/ Max -20℃~70℃ |
| 3-4 SHUNT CAPACITANCE (C0) | 7.0pF/Max |
| 3-5 MOTIONAL CAPACITANCE(C1) | N/A |
| 3-6 INSULATION RESISTANCE | 500MΩmin/DC100V±15V (Lead to lead , case to lead) |
| 3-7 AGING RATE PER YEAR: | ±5ppm/Year |
hc49s 12mhz quartz crystal Dimensions: mm
Aging
100ºC±5ºC for 168 hours
SEALING TIGHTNESS
Helium Bombing:0.4~0.5MPa Time:1 hour
High Temp Storage
Temperature: 85℃ ± 5℃ Time 96 hours
SOLDERING HEAT RESISTANCE
Electrical characteristics shall be satisfied. Without distinct looseness of terminals.
Pre-Heating:125℃ 60~120 Seconds Solder temperature: 245± 5℃ Time: 20±5 sec
RELIABILITY
Provided that measurement shall be carried out after letting it alone at room temperature for 1 hour.
DROP TEST
Electrical characteristics shall be satisfied after dropping two times from the
height of 50cm onto the hardWood
VIBRATION
Electrical characteristics shall be satisfied after supplying the following vibration.
a). ENTIRE FREQUENCY RANGE 20 to200Hz, full-wave
b). Sweep/Cycle:
2min
c). Amplitude: (Peak to Peak)
1.5 mm
d). DIRECTION X.Y.Z
e)Duration:
4min,4 times in each direction:48min
Solderability
Temperature: 235±5℃ Time: 10±1 sec
12mhz hc49s Aging
100ºC±5ºC for 168 hours
SEALING TIGHTNESS
Helium Bombing:0.4~0.5MPa Time:1 hour
High Temp Storage
Temperature: 85℃ ± 5℃ Time 96 hours
SOLDERING HEAT RESISTANCE
Electrical characteristics shall be satisfied. Without distinct looseness of terminals.
Pre-Heating:125℃ 60~120 Seconds Solder temperature: 245± 5℃ Time: 20±5 sec
49S quartz crystal circuit
