document number: 35012 for tec hnical questions, contact: frequency@vishay.com www.vishay.com revision: 19-mar-10 1 low profile smd type crystal units xt49m vishay dale this part is a miniature at cut strip crystal unit packaged for surface mounting. features ?low cost ? industry standard ? wide frequency range ? excellent aging ? surface mount ? 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 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 66.999 80 3 rd overtone 6.000 to 9.999 100 fundamental/at dimensions in inches [millimeters] 0.403 [10.24] max. 0.150 [3.8] max. 0.150 [3.8] max. s older pattern 0.376 [9.55] 0.219 [5.55] 0.081 [2.05] insulation base crystal lead 0.185 0.012 [4.7 0.3] 0.484 0.024 [12.3 0.6] 0.437 + 0.020/- 0.031 [11.1 + 0.50/- 0.80] 0.201 0.020 [5.1 0.5] 0.031 0.012 [0.8 0.3] crystal unit 0.008 [0.2] max. 0.177 [4.5] max. 0.012 [0.3] max.
www.vishay.com for technical questions, contact: frequency@vishay.com document number: 35012 2 revision: 19-mar-10 xt49m vishay dale low profile smd type crystal units ordering information xt49m r -20 20m e2 model otr blank = standard r = - 40 c to + 85 c load blank = series -20 = 20 pf -30 = 30 pf -32 = 32 pf frequency/mhz jedec lead (pb)-free standard global part number xt 9m 2 0 a na 2 0m 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 an d 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 an d 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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