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| document number: 35047 for technical questions contact: frequency@vishay.com www.vishay.com revision: 07-apr-03 1 low profile smd type crystal units XT49ML vishay dale features ? low cost ? industry standard ? wide frequency range ? excellent aging ? surface mount standard electrical specifications parameter symbol condition unit min typical max frequency range f o mhz 3.200 66.000 frequency tolerance ? f/fo at 25? ppm ?10 ?30 ?50 temperature stability tc ref to 25? ppm ?10 ?30 ?50 operating temperature range t opr ? - 20* + 70* storage temperature range t stg ? - 40 + 85 shunt capacitance c o pf 7 load capacitance cl customer speci?d pf 10 series insulator resistance ir 100v dc m ? 500 drive level dl w 100 500 aging fa at 25?, per year ppm - 5.0 + 5.0 dimensions in inches [millimeters] equivalent series resistance (esr) and mode of vibration (mode) frequency range(mhz) max esr( ? ? ? ? ) mode frequency range(mhz) max esr( ? ? ? ? ) mode 3.200 to 4.499 150 fundamental/at 9.000 to 9.999 60 fundamental/at 4.500 to 5.999 120 fundamental/at 10.000 to 12.999 50 fundamental/at 6.000 to 6.999 100 fundamental/at 13.000 to 30.000 40 fundamental/at 7.000 to 7.999 90 fundamental/at 30.000 to 66.000 80 3 rd overtone 8.000 to 8.999 80 fundamental/at 0.150 [3.8] max [10.24] max crystal unit 0.138 [3.5] max 0.012 [0.3] max 0.008 [0.2] max 0.150 [3.8] max 0.787 [2.0] 0.236 [6.0] 0.354 [9.0] 0.201 0.020 [5.1 0.5] 0.449 0.012 [11.4 0.3] 0.508 0.016 [12.9 0.4] 0.031 0.012 [0.8 0.3] 0.185 0.012 [4.7 0.3] insulation base crystal lead solder pattern ordering information XT49ML model r otr blank = standard r = - 40? to +85? - 20 load blank = series - 20 = 20pf - 30 = 30pf - 32 = 32pf 20 frequency/mhz this part is a miniature at cut strip crystal unit packaged for surface mounting.
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