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| raltron electronics corporation 10651 nw 19th st. miami, florida 33172 u.s.a. tel: 305-593-6033 fax: 305-594-3973 e-mail: sales@raltron.com internet: http://www.raltron.com series h250a surface mount microprocessor crystal series h250a frequency range 3.579545 mhz to 60.000 mhz frequency tolerance at 25 c 100 ppm maximum (50 ppm available) frequency stability over temperature 100 ppm maximum (50 ppm available) operating temperature range -10 c to +70 c standard -40 c to +85 c extended storage temperature range -40 c to +85 c aging 5 ppm per year maximum load capacitance 12 pf to 32 pf or series shunt capacitance 7 pf maximum equivalent series resistance (esr) see table 1 drive level 0.3 mw maximum shock resistance 5 ppm maximum 75 cm drop test in 3 axes onto a hard surface vibration resistance frequency 10 to 55 hz total amplitude 1.5 mm for 2 h in 3 axes reflow conditions 240 c for 5 s maximum holder type - frequency - load capacitance - mode - extended temperature - tape and reel h250a in mhz 12 to 32 pf for parallel s for series fund 3ot fundamental third overtone ext tr table 1 frequency (mhz) max esr (ohm) frequency (mhz) max esr (ohm) 3.579545 300 14.31818 100 3.6864 300 16.00 100 4.00 200 16.9344 100 6.00 200 19.6608 100 8.00 120 20.00 100 12.00 100 24.00 100 example: h250a-10.000-20-ext-tr preheating reflow cooling 240 c 150 c 25 c time (seconds) temperature 100 s typical 5 s .059 .004 dia 2.0 0.1 1.5 0.1dia .079 .004 .157 .004 4.0 0.1 1.75 0.1 .069 .004 11.5 0.1 .453 .004 24 0.3 .945 .012 12 0.1 .472 .004 10.75 0.1 .423 .004 2.8 0.1 .110 .004 specifications features outline drawing part numbering system carrier tape dimensions solder reflow profile 3.0 7.0 2.0 0.8 .276 .031 .079 .118 1.5 .098 2.5 marking area .098 .012 2.5 0.3 .453 .012 11.5 0.3 .465 .012 11.8 0.3 .189 .012 4.8 0.3 .216 .012 5.5 0.3 2.7 2.7 5.0 4.0 2.5 2.5 .106 .106 .161 .098 .098 .197 scale none dimension in mm inch solder pattern 330mm reel diameter 24mm tape width 12mm pitch quantity: 1000 pieces per reel packaging low package height of 2.5 mm wide frequency range low cost
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