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 surface mount tuning fork crystal unit features specifications outline drawing reflow soldering profile frequency vs. temperature curve pin 4 pin 3 pin 2 pin 1 lead connection 4.3 max 2.6 7.3 max 2.0 max 1.8 0 min 5.08 0.4 .287 max .102 .169 max .079 max .071 .016 .200 solder pad layout 1.2 1.2 3.88 1.3 1.3 2.4 .094 .051 .051 .153 .047 .047 1 4 2 3 marking area preheating reflow cooling 230 c 150 c 25 c 60 s min time ( seconds ) temperature 230 s max 20 s 2 to 5 c/s 100 c 200 c 1 to 4 c/s 30 s 0 -10 25 60 temp (c) f/fo d (ppm) -50 series rse h2 scale none dimension in mm inch carrier tape dimensions packaging 330mm reel diameter 16mm tape width, 8mm pitch quantity: 3000 pieces per reel part numbering system 1.5 dia .06 dia .16 .004 4.0 0.1 1.75 .069 16 .630 7.5 .295 4.3 0.1 .170 .004 8.0 0.1 .315 .004 2.0 0.05 .079 .002 h cavity height "h" rse "a and b" = 4.0 mm/.157 in rse "c and d" = 3.0 mm/.118 in holder type - frequency - load capacitance - h2 - tape and reel rse in khz 6 or 12.5 pf t example: RSE-32.768-6-h2-t suitable for time of day clock applications low profile 2 mm height excellent for automatic and high density surface mounting nominal frequency 32.768 khz frequency tolerance 20 ppm maximum (50 ppm and 100 ppm available) turnover temperature 25 c 5 c temperature coefficient (-0.035 0.8) ppm/ c2 load capacitance 6 or 12.5 pf equivalent series resistance 55 k ohm maximum drive level 0.1 w maximum shunt capacitance 1.5 pf maximum aging (first year) 5 ppm maximum operating temperature range -40 c to +85 c storage temperature range -55 c to +125 c shock resistance 5 ppm maximum 75 cm drop test in 3 axes onto a hard surface or 3000 g x 0.3 ms x ? sinewave in 3 axes solder reflow conditions 230 c maximum for 20 s maximum d ( datasheet : )
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