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| XT38P Vishay Dale Miniature SMD Watch Crystal FEATURES * 2.5 mm height * Industry standard footprint * Long term stability * Tape and reel, 3000 pcs The XT38P is a 2.5 mm height plastic molded 32.768 KHz SMD crystal unit. This thermoplastic molded rugged part is perfect for your SMD applications in limited circuit space using the watch frequency. * 100 % Lead (Pb)-free and RoHS compliant RoHS COMPLIANT 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 CONDITION at 25 C parabolic coefficient UNIT KHz ppm ppm/C2 C C pF fF pF M W ppm K MIN -20 -0.027 -40 -55 TYPICAL 32.768 -0.035 MAX +20 -0.043 +85 +125 1.0 2.0 12.5 500 1.0 3.0 50 at 25 C 3 C DIMENSIONS in inches [millimeters] XT38PA 0.343 [8.7] Max. 0.098 [2.5] Max. 0.020 0.04 [0.5 0.1] 0.45 0.08 [1.15 0.2] PARABOLIC TEMPERATURE CURVE TEMPERATURE (C) - 20 - 10 0 10 20 30 40 50 60 70 - 10 - 20 - 30 0.217 0.04 [5.5 0.1] 0.45 0.08 [1.15 0.2] #1 - 40 #2 0.146 [3.7] Max. - 50 - 60 #4 #3 F/f(ppm) ORDERING INFORMATION XT38P MODEL A 32.768 KHz e6 JEDEC Lead (Pb)-Free STANDARD 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 = - 0.042 ppm*(C) = - 0.042 ppm*(20)2 = - 16.8 ppm(max) PAD LAYOUT FREQUENCY/KHz GLOBAL PART NUMBER X T 3 MODEL 8 P A PAD LAYOUT A PACKAGE CODE 3 2 K 7 6 8 FREQUENCY www.vishay.com 8 For technical questions contact: frequency@vishay.com Document Number: 35022 Revision: 17-Jun-05 |
Price & Availability of XT38PAA32K768E6
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