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Details, datasheet, quote on part number:XT38T
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Datasheet text preview:
XT38T
Vishay Dale
Tuning Fork Crystal
FEATURES
· Miniature package · Low cost
· KHz frequency
· Tight tolerance The tuning fork type quartz crystal provides ultimate in size, performance and economic trade-offs. So it is used as a clock source in communication equipment, measuring instrument, microprocessor and other time management applications.
STANDARD ELECTRICAL SPECIFICATIONS
PARAMETER Frequency Range Frequency Tolerance Frequency Coefficient Operating Temperature Range Storing Temperature Range Shunt Capacitance Motional Capacitance Load Capacitance Insulation Resistance Drive Level Aging (first year) Equivalent Series Resistance(ESR) SYMBOL FO F/FO K TOPR TSTG CO C1 CL IR DL Fa Rs at 25°C ± 3°C 100VDC at 25°C ref to 25°C CONDITION UNIT KHz ppm ppm/(°C)2 °C °C pF fF pF M µW ppm K - 5.0 500 1 + 5.0 35 1 - 10 - 20 0.85 2 12.5 MIN TYPICAL 32.768 ± 20 - 0.042 + 60 + 70 2 4 MAX
DIMENSIONS in inches [millimeters]
0.326 [8.28] Max 0.122 [3.1] Max 0.012 [0.30]
PARABOLIC TEMPERATURE CURVE
TEMPERATURE (°C)
- 20 - 10 0 10 20 30 40 50 60 70
0.354 [9.0] Min
0.043 [1.1]
- 10
- 20
- 30
- 40
- 50
ORDERING INFORMATION
- 60
F/f(ppm)
XT38T MODEL
32.768KHz FREQUENCY/KHz
To determine frequency stability, use parabolic curvature (k). For example: What is stability at 45°C? 1) Change in Temperature (°C) = 45 - 25 = 20°C 2) Change in Frequency = - 0.042ppm*(°C) = - 0.042ppm*(20)2 = - 16.8ppm(max)
Document Number: 35043 Revision: 28-Mar-03
For technical questions contact: frequency@vishay.com
www.vishay.com 1
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