document number: 35014 for tec hnical questions, contact: frequency@vishay.com www.vishay.com revision: 19-mar-10 1 low profile holder type crystal units xt49s vishay dale this part is a miniature at cu t strip crystal unit with a low profile package. it is with resistance weld. features ?low cost ? industry standard ? wide frequency range ? excellent aging ? compliant to rohs directive 2002/95/ec standard electrical specifications parameter symbol condition unit min. typ. max. frequency range f o mhz 3.579545 - 66.000 frequency tolerance f/f o at 25 c ppm - 30 - + 30 temperature stability t c ref. to 25 c ppm - 50 - + 50 operating temperature range t opr c - 10 - + 70 storage temperature range t stg c - 55 - + 125 shunt capacitance c 0 pf - - 7 load capacitance c l customer specified pf 10 - series insulation resistance i r 100 v dc m 500 - - drive level d l w - 100 500 aging (first year) fa at 25 c, per year ppm - 5 - + 5 equivalent series resistance (esr) and mode of vibration (mode) frequency range (mhz) max. esr ( ) mode frequency range (mhz) max. esr ( )mode 3.579 to 3.999 200 fundamental/at 10.000 to 13.999 80 fundamental/at 4.000 to 4.999 150 fundamental/at 14.000 to 39.999 50 fundamental/at 5.000 to 5.999 120 fundamental/at 40.000 to 66.000 80 3 rd overtone 6.000 to 9.999 100 fundamental/at dimensions in inches [millimeters] 0.435 [11.05] max. 0.183 [4.65] max. 0.403 [10.24] max. 0.192 0.008 [4.88 0.2] 0.500 [12.7] min. 0.150 [3.81] max. ? 0.017 0.002 [0.43 0.05] 0.138 [3.5] max.
www.vishay.com for technical questions, contact: frequency@vishay.com document number: 35014 2 revision: 19-mar-10 xt49s vishay dale low profile holder type crystal units ordering information xt49s r -20 sp 12m e2 model otr blank = standard r = - 40 c to + 85 c load blank = series -16 = 16 pf -20 = 20 pf standard -30 = 30 pf -32 = 32 pf options blank = standard sp = spacer sl = sleeve frequency/mhz jedec lead (pb)-free standard global part number xt9s 20 a na 12m model load package code option frequency global part numbering xt9s 20 a na 40m model number load capacitance package code options frequency xt9s = xt49s xt9m = xt49m xtu1 = xtum1 18 = 18 pf 20 = 20 pf nl = series to be specified by customer tape and reel g = rf5 (xt9s) h = rf7 (xt9m) bulk a = b04 (all models) na = no additional options rr = extended temperature of - 40 c to + 85 c contact factory for all other options 4m = 4 mhz 40m = 40 mhz 100m = 100 mhz 12m288 = 12.288 mhz m is used as decimal place holder in frequency example: xt49s-20 40m xt36 20 a 12m model number load capacitance package code frequency xt46 = xt46c xt36 = xt36c 18 = 18 pf 20 = 20 pf nl = series to be specified by customer tape and reel h = rf7 bulk a = b04 (all models) 4m = 4 mhz 40m = 40 mhz 100m = 100 mhz 12m288 = 12.288 mhz m is used as decimal place holder in frequency example: xt36c-20 12m
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