tuning fork crystal page 1 of 3 tcxo page 1 of 3 r26 - 32.768 - 12.5 - ext - smd - tr r a l t r o n e l e c t r o n i c s ? 1 0 4 0 0 n .w . 3 3 r d s t r e e t ? m i a m i , f l o r i d a 3 3 1 7 2 ? u . s . a . telephone: +1 - 305 - 593 - 6033 ? fax: +1 - 305 - 594 - 3973 ? e - mail: sales@raltron.com ? web site: http://www.raltron.com ? specification s ? mechanical specification ? carrier tape dimensions note: refer to eia - 481 for dimensions ? packaging 330 mm reel diameter 16 mm tape width, 8 mm pitch quantity: 2000 pieces per reel in accordance with eia - 481 note : s older by terminals only max 245c for ten seconds parameter value photo is not actual part nominal frequency 32.768 k hz frequency tolerance at 25c , max 2 0 ppm turnover temperature 25c 5c parabolic curvature constant - 0.034 ppm / c 2 load capacitance 12.5 pf equivalent series resistance , max 35 k ? drive level , max 1.0 w shunt capacitance , typical 1.35 pf aging (first year) 3 ppm first year max quality factor 70000 typical insulation resistance 500 m ? min operating temperature range - 4 0c to + 85 c storage temperature range - 55 c to + 12 5 c
tuning fork crystal page 2 of 3 tcxo page 2 of 3 r26 - 32.768 - 12.5 - ext - smd - tr r a l t r o n e l e c t r o n i c s ? 1 0 4 0 0 n .w . 3 3 r d s t r e e t ? m i a m i , f l o r i d a 3 3 1 7 2 ? u . s . a . telephone: +1 - 305 - 593 - 6033 ? fax: +1 - 305 - 594 - 3973 ? e - mail: sales@raltron.com ? web site: http://www.raltron.com ? reflow profile reflow profile temperature min preheat t smin 150c temperature max preheat t smax 200c time (t smin to t smax ) t s 60 - 180 sec. temperature t l 217c peak temperature t p 245 c ramp - up rate r up 3c/s max. ramp - down rate r down 6c/s max. time within 5c of peak temperature t p 10 s time t[25c] to peak temperature t[25c] to peak 480 s time t l 60 - 150 s ? environmental parameter value moisture sensitivity level 1 rohs - 2 5 /6 compliant, exemption 7a reach svhc compliant halogen - free compliant esd classification level n/a termination finish sn temp. [c] time [s] t p t l t smax t smin ramp - up ramp - down critical zone t l to t p t[25c] to peak t s preheat t l t p
tuning fork crystal page 3 of 3 tcxo page 3 of 3 r26 - 32.768 - 12.5 - ext - smd - tr r a l t r o n e l e c t r o n i c s ? 1 0 4 0 0 n .w . 3 3 r d s t r e e t ? m i a m i , f l o r i d a 3 3 1 7 2 ? u . s . a . telephone: +1 - 305 - 593 - 6033 ? fax: +1 - 305 - 594 - 3973 ? e - mail: sales@raltron.com ? web site: http://www.raltron.com ? marking x3 f my r x C internal production id code m C month code y C year code year code year c ode 2011 1 2012 2 2013 3 2014 4 2015 5 2016 6 2017 7 2018 8 2019 9 month code month code january a february b march c april d may e june f july g august h september j october k november l december m ? approval drawn by: kjackson, march 4, 2016 approved by: kjackson, march 4, 2016 revision: a, new format release
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