E3WC Series E3WC • RoHS Compliant (Pb-Free) • 32.768kHz watch crystal • Miniature cylindrical package • ±20ppm frequency tolerance • 12.5pF load capacitance H L 8.28 3.1 CRYSTAL NOTES __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ ELECTRICAL SPECIFICATIONS Frequency 32.768kHz Frequency Tolerance (at 25°C) ±20ppm Frequency Stability -0.042ppm / (∆°C)2 Maximum, Parabolic; Turn Over Temperature at 25°C ±5°C Operating Temperature Range -10°C to 60°C Aging (at 25°C) ±5ppm / year Maximum Storage Temperature Range -20°C to 70°C Shunt Capacitance 0.85pF Typical, 2pF Maximum Motional Capacitance 2.0fF Typical Drive Level 1 µWatt Maximum Equivalent Series Resistance 35,000 Ohms Maximum Insulation Resistance 500 Megaohms Minimum at 100VDC Load Capacitance (CL) 12.5pF 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. PART NUMBERING GUIDE E3WC D A 12 - 32.768K FREQUENCY TOLERANCE D=±20ppm at 25°C NOMINAL FREQUENCY LOAD CAPACITANCE 12=12.5pF OPERATING TEMPERATURE RANGE A=-10°C to +60°C NOTES __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 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__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ MECHANICAL DIMENSIONS ALL DIMENSIONS IN MILLIMETERS MARKING SPECIFICATIONS PARABOLIC TEMPERATURE CURVE 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.