CM519

TUNING FORK CRYSTAL UNIT (SMD • Ceramic Package) RoHS compliant / Pb free CM519 ■ FEATURES 3000pcs/reel 7Tuning fork crystal with ceramic packaged type. 7Small & thin packaging and light weight. 7Most appropriate for portable devices and mobile telecommunications devices. Life-size ■ DIMENSION [mm] 4.9±0.15 1.8±0.15 ■ SOLDER PAD LAYOUT [mm] 4-R0.15 1.0 Max. 1.3 2.9 1.3 （3.95） 0.53 0.1 3.2 Internal connection 0.75 0.1 1.6 › Do not design any patterns on shaded area. ■ STANDARD SPECIFICATIONS Item Nominal Frequency Frequency Tolerance Load capacitance Operating Temperature Range Storage Temperature Range Turnover Temperature Temperature Coefficient Motional (series) resistance Level of drive Aging (first year) Shunt capacitance Model CM519 32.768kHz ±20ppm 9.0pF, 12.5pF −40℃∼＋85℃ −55℃∼＋125℃ Conditions at 25˚C Need to specify your requirement f0 △ f/f0 CL TOPR TSTR TM β R1 DL △ f/f0 25℃±5℃ −0.034±0.006ppm/℃2 70KΩMax. 1μW Max. ±3ppm Max. 1.35pF Typ. at 25˚C 25℃±3℃ C0 http://cfm.citizen.co.jp/english/product/pr02.html 2.2