CM315

TUNING FORK CRYSTAL UNIT (SMD • Ceramic Package) RoHS compliant / Pb free CM315 ■ FEATURES 3000pcs/reel 7Tuning fork crystal with ceramic packaged type. 7High-density SMD type Ultra-light weight with ultra-miniature packaging. High-stability assured with tight vacuum sealing. 7Most appropriate for portable devices and mobile telecommunications devices. Life-size ■ DIMENSION [mm] 3.2±0.1 1.5±0.1 ■ SOLDER PAD LAYOUT [mm] 4-R0.15 0.9 Max. 1.1 1.4 1.1 （2.4） 1.8 C0.3 0.1 Internal connection 0.6 0.1 1.3 › 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 CM315 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. 0.95pF Typ. at 25˚C 25℃±3℃ C0 http://cfm.citizen.co.jp/english/product/pr02.html 1.9