td-020818 rev. b specifications subject to change without notice. aging: miniature package provides excellent shock resistance and low power consumption. offers an excellent clock source for communication and measuring equipment. 32.768khz tuning fork crystal C26 & c38 model 32.768khz 20ppm @ 25c 25c 5c -0.034 0.006ppm/c 2 (see chart 1) -10c to 60c -40c to 85c 35k ohm max 12.5pf std. (C26) 0.0030pf typ. (c38) 0.0035pf typ. (C26) 1.35pf typ. (c38) 1.60pf typ. (C26) 450 typ. (c38) 460 typ. 1uw max 500m ohm min, dc100v15v frequency: calibration tolerance: turnover temperature: frequency vs temp.: operating temp. range: storage: esr: load capacitance: motional capacitance: shunt capacitance: capacitance ratio: drive level: insulation resistance: 60 25 0 -10 0 -50 temperature c typical temperature characteristic ppm chart 1 0.118 0.002 (3.00 0.05) 0.315 0.020 (8.00 0.50) 0.413 (10.49) 0.043 0.004 (1.09 0.10) 0.012 0.001 (0.30 0.03) 0.081 0.002 (2.06 0.05) 0.256 0.020 (6.50 0.50) 0.276 (7.01) 0.028 0.004 (0.70 0.10) 0.008 0.001 (0.20 0.03) C26 c38 processing notes: hand soldering: lead wire temperature not to exceed 270c, 10 sec max. solder-dip: crystal package is recommended to be mounted in the up-right position. if mounted sideways caution must be taken to insure that heat is not transmitted over crystal package. reflow oven: not recommended. cleaning: washable all dimensions are max unless otherwise specified. dimensions inches (mm) <3ppm 1st/yr max 25c 3 34 tuning fork crystal
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