specification requirement for crystal electrical characteristic parameter symb value condition frequency range f o 32.768khz frequency tolerance f/fo 2 0ppm ref to 25 temperature coefficient f/fo -0.034 0.006 ppm/( ) 2 turnover temperature tm 25 5 operating temperature range t opr -10 to 60 storage temperature range t stg -20 to 70 quality factor 60,000typ series resistance r 1 dt-38 30 k ref to 25 DT-26 35 k ref to 25 shunt capacitance c o 1.8pf typ motional capacitance c 1 0.0030typ load capacitance c l 12.5pf insulator resistance ir 500 m dc100v 15v drive level dl 1 w capacitance ratio r 450typ aging f/fo 5ppm at 25 3 dimensions (mm) DT-26 & dt-38 series tiger electronic co.,ltd
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