document number: 35020 for tec hnical questions, contact: frequency@vishay.com www.vishay.com revision: 09-mar-10 1 resistance welded miniature crystal units xtum1 vishay dale the xtum-1 crystal unit is a miniature resistance welded package that provides excellent hermetic seal and frequency aging. the frequency range till 125 mhz and miniature size is ideal for communication equipment. features ?low cost ? industry standard ? small compact size ? wide frequency range ? high stability ? at cut crystal ? compliant to rohs directive 2002/95/ec standard electrical specifications parameter symbol condition unit min. typ. max. frequency range f o mhz 10.000 - 125.000 frequency tolerance f/f o at 25 c ppm - 10 50 temperature stability t c see frequency stability vs. temperature range ppm - 10 50 operating temperature range t opr c - - - storage temperature range t stg c - 40 - + 85 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 10.000 to 12.999 60 fundamental 40.000 to 59.999 50 fundamental 13.000 to 19.999 40 fundamental 60.000 to 79.999 50 3 rd overtone 20.000 to 29.999 30 fundamental 80.000 to 125.000 100 5 th overtone 30.000 to 39.999 60 fundamental frequency stability vs. temperature range (25 c 3 c) temperature range (c) frequency stability (ppm) 5 10 15 20 30 50 0 to 50 xxxxxx - 10 to 60 x x x x x x - 20 to 70 x x x x x - 40 to + 85 xxx dimensions in inches [millimeters] 0.148 0.008 [ 3 .75 0.2] 0.500 [12.7] min. 0.280 [7.10] max. 0.014 0.002 [0. 3 6 0.05] 0. 3 19 [8.10] max. 0.094 [2.40] max. 0. 3 11 [7.90] max. 0.126 [ 3 .20] max.
www.vishay.com for technical questions, contact: frequency@vishay.com document number: 35020 2 revision: 09-mar-10 xtum1 vishay dale resistance welded miniature crystal units ordering information xtum1 -18 20m e2 model load blank = series -32 = 32 pf -18 = 18 pf standard frequency/mhz jedec lead (pb)-free standard global part number xtu1 18 a na 20m 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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