2.500.10 2.000.10 gnd hot sensor hot 4?0.650.1 4?0.750.1 #4 #3 #1 #1 #4 #2 #4 #3 #1 #2 #2 #3 connection (top view) 0.950.05 dimensions (unit: mm) 0.85 0.95 0.95 1.00 0.70 0.85 recommended land pattern (unit: mm) crystal units with thermistor surface mount type CT2520DB 2.5 2.0mm for mobile communications rohs compliant features ? reference frequency for telecommunication systems ? reflow compatible ? using ceramic package resulting in high reliability applications ? mobile communications, bluetooth ? , wireless lan, gps * bluetooth ? trademarks are owned by bluetooth sig inc. how to order CT2520DB 19200 series frequency load capacitance b0 6 pf c0 7 pf std. frequency stability f 10 10 - 6 std. g 15 10 - 6 operating temp. range frequency temp. stability ff - 20 to + 70 c 10 10 - 6 lj - 30 to + 85 c 15 10 - 6 individual specification packaging (tape & reel 12000 pcs./ reel) specifications item symbol specification units remarks frequency range f _nom 16000 to 60000 khz overtone order ot fundamental D load capacitance cl 7 pf frequency stability f _tol 10 10 - 6 25 c 3 c motional series resistance r1 table 1 ohm drive level dl 10 w 100 w max. operating temp. range t _use - 30 to + 85 c storage temp. range t _stg - 40 to + 105 c frequency temp. characteristics f _tem 12 10 - 6 freq. deviation from the value at 25 c thermistor resistance D table 2 ohm 25 c thermistor b-constant D table 3 k 25 c - 50 c ? please contact us for other specifications. table1 motional series resistance frequency range motional series resistance 16000 to 19199khz 100 max. 19200 to 25999khz 80 max. 26000 to 29999khz 60 max. 30000 to 60000khz 50 max. table 2 thermistor resistance resistance specification 100k 1% table 3 thermistor b-constant b-constant specification 4250k 1%
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