features ? small, low pro le ? ceramic package ? pb free ? re ow compatible applications ? consumer/ mobile equipment how to order st3215sb 32768 ?? ? ? ? ?? ? ? ? ? ? ? ? ? series ? frequency 32.768khz ? load capacitance h5 12.5 pf ? frequency stability h 2010 ?6 ? operating temp. range p ?40 to +85c ? frequency temp. stability w 20010 ?6 ? individual speci cation typical part numbers load capacitance part numbers 12.5 st3215sb32768h5hpwaa 9.0 ST3215SB32768E0HPWBB 7.0 st3215sb32768c0hpwbb pb free rohs compliant speci cations item symbol speci cation units remarks nominal frequency f _nom 32.768 khz frequency tolerance f _tol 10, 20 10 ?6 25c3c turnover temperature ti +255 c parabolic coef cient b ?0.04 max. 10 ?6 / c 2 motional resistance r1 70 max. k-ohm motional capacitance c1 3.7 typ. ff shunt capacitance c0 0.9 typ. pf load capacitance cl 12.5/ 9.0/ 7.0 pf please contact us drive level dl 0.1 w operating temp. range t _use ?40 to +85 c storage temp. range t _stg ?55 to +125 c frequency aging f _age 3 10 ?6 dimensions (unit: mm) 3.2 o0.1 0.8 o0.1 1.5 o0.1 1.7 recommended land pattern (unit: mm) 3.2 1.5mm for consumer/ mobile equipment crystal units surface mount type: tuning fork st3215sb
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