2 9 crystal unit 3 0 crystal unit crystal unit specifications (characteristics) external dimensions (unit: mm) recommended soldering pattern (unit: mm) specifications (characteristics) thin smd high-frequency crystal unit FA-248 product number (please refer to page 1) q 2 2 f a 2 4 8 x x x x x 0 0 ? high-density mounting-type smd. ? excellent shock resistance. ? capable of covering a wide frequency range. (from 12 mhz to 27 mhz) ? 0.9 mm typ. thickness is equal to smd-type ic. ? most suitable for small communication devices. ? available for lead (pb)-free soldering. ? lead (pb)-free terminal product. actual size item symbol specifications remarks nominal frequency f 12.000 mhz to 27.000 mhz fundamental mode 27 mhz < f 32 mhz please contact us for inquiries. temperature range storage temperature t stg -40 ?c to +125 ?c stored as bare product after unpacking operating temperature t opr -20 ?c to +70 ?c / -40 ?c to +85 ?c specified equivalent series must be satisfied. operable temperature t use as per below table specified equivalent series and frequency temperature characteristics must be satisfied. recommended drive level dl 10 w to 100 w frequency tolerance f/f 10 x 10 -6 , 15 x 10 -6 , 20 x 10 -6 ? 1 ta = +25 ?c 3 ?c frequency temperature characteristics 15 x 10 -6 , 20 x 10 -6 (standard) ? 1 as per below table -20 ?c to +70 ?c load capacitance c l 10 pf to please specify series resistance r 1 as per below table operable temperature range , dl = 100 w shunt capacitance c 0 5.0 pf max. insulation resistance ir 500 m min. aging fa 2 x 10 -6 / year max. ta = +25 ?c 1 ?c, first year shock resistance s.r. 5 x10 -6 max. 100 g dummy (seiko epson standard) drop from 1500 mm height on to the concrete 3 directions 10 times. ? 1 please ask tighter telerance. frequency temperature characteristics operable temperature frequency tolerance 0 ?c to +50 ?c 5 x 10 -6 min. -10 ?c to +60 ?c 7 x 10 -6 min. -20 ?c to +70 ?c 10 x 10 -6 min. -30 ?c to +80 ?c 15 x 10 -6 min. -40 ?c to +85 ?c 20 x 10 -6 min. series resistance (r1) frequency series resistance 12.0 mhz f < 13.0 mhz 70 max. 13.0 mhz f < 16.0 mhz 60 max. 16.0 mhz f < 20.0 mhz 50 max. 20.0 mhz f 27.0 mhz 40 max. 0.9 0.1 2.5 0.1 0.7 2.0 0.9 0.8 4.0 0.1 #3 #4 #2 #1 #4 #3 #2 #1 internal connection # 4 # 1 # 3 # 2 1.6 1.4 1.15 3.0 www..net
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