TUNING FORK CRYSTAL UNIT (SMD • Ceramic Package) CM415 RoHS compliant / Pb free 3000pcs/reel ■ FEATURES 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] ■ SOLDER PAD LAYOUT [mm] 1.5±0.1 4.1±0.1 1.1 2.3 1.1 1.9 0.9 Max. 4-R0.15 （3.3） 0.1 Internal connection 1.3 0.38 2.7 C0.3 0.6 0.1 Do not design any patterns on shaded area. ■ STANDARD SPECIFICATIONS Item Model CM415 Conditions f0 32.768kHz △ f/f0 ±20ppm at 25˚C CL 9.0pF, 12.5pF Need to specify your requirement Operating Temperature Range TOPR −40℃∼＋85℃ Storage Temperature Range TSTR −55℃∼＋125℃ Turnover Temperature TM 25℃±5℃ Temperature Coefficient β −0.034±0.006ppm/℃2 Motional (series) resistance R1 70KΩMax. Level of drive DL 1μW Max. △ f/f0 ±3ppm Max. C0 1.10pF Typ. Nominal Frequency Frequency Tolerance Load capacitance Aging (first year) Shunt capacitance http://cfm.citizen.co.jp/english/product/pr02.html at 25˚C 25℃±3℃