E3WC
Series
• RoHS Compliant (Pb-Free)
• 32.768kHz watch crystal
• Miniature cylindrical package
• ±20ppm frequency tolerance
• 12.5pF load capacitance
NOTES
H
L
E3WC
8.28
3.1
CRYSTAL
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ELECTRICAL SPECIFICATIONS
Frequency
Frequency Tolerance (at 25°C)
Frequency Stability
Operating Temperature Range
Aging (at 25°C)
Storage Temperature Range
Shunt Capacitance
Motional Capacitance
Drive Level
Equivalent Series Resistance
Insulation Resistance
Load Capacitance (C
L
)
MANUFACTURER
CATEGORY
SERIES
32.768kHz
±20ppm
-0.042ppm / (∆°C)
2
Maximum, Parabolic;
Turn Over Temperature at 25°C ±5°C
-10°C to 60°C
±5ppm / year Maximum
-20°C to 70°C
0.85pF Typical, 2pF Maximum
2.0fF Typical
1 µWatt Maximum
35,000 Ohms Maximum
500 Megaohms Minimum at 100V
DC
12.5pF
PACKAGE
CLASS
REV
.
DATE
ECLIPTEK CORP.
CRYSTAL
E3WC
CYLINDRICAL
CR49
08/05
800-ECLIPTEK www.ecliptek.com for latest revision
Specifications subject to change without notice.
PART NUMBERING GUIDE
E3WC D A 12 - 32.768K
FREQUENCY TOLERANCE
D=±20ppm at 25°C
OPERATING TEMPERATURE RANGE
A=-10°C to +60°C
NOMINAL FREQUENCY
LOAD CAPACITANCE
12=12.5pF
NOTES
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MECHANICAL DIMENSIONS
ALL DIMENSIONS IN MILLIMETERS
PARABOLIC TEMPERATURE CURVE
MARKING SPECIFICATIONS
Line 1: 32.768K
Nominal Frequency in kHz
MANUFACTURER
CATEGORY
SERIES
PACKAGE
CLASS
REV
.
DATE
ECLIPTEK CORP.
CRYSTAL
E3WC
CYLINDRICAL
CR49
08/05
800-ECLIPTEK www.ecliptek.com for latest revision
Specifications subject to change without notice.