CFS206 32.768KDZB-UB

TUNING FORK CRYSTAL UNIT RoHS compliant / Pb free (Cylinder Type) CFS-206・ ・CFS-145 ■ FEATURES ● Frequency range : 32.768kHz ● External dimensions (mm) 　　CFS-206 Φ : 2.0 x L : 6.2 CFS-145 Φ : 1.5 x L : 5.1 ● Applications 　　Watch / Clock / Security devices / Consumer products ■ DIMENSION [mm] CFS-206 CFS-145 ■ STANDARD SPECIFICATIONS Item Nominal Frequency Model CFS-206 CFS-145 Conditions f0 32.768kHz Δf/f0 ±5ppm / ±10ppm / ±20ppm at 25℃ CL 6.0pF / 7.0pF / 8.0pF / 12.5pF Please specify your requirement Operating Temperature Range TOPR -20℃ ～ +70℃ Storage Temperature Range TSTR -40℃ ～ +85℃ Turnover Temperature TM 25℃±5℃ Temperature Coefficient β -0.034±0.006ppm/℃2 Motional (series) resistance R1 Level of drive DL 1μW Max. Δf/f0 ±3ppm Max. Frequency Tolerance Load capacitance Aging (first year) Shunt capacitance C0 35KΩ Max. 1.2pF Typ. http://cfd.citizen.co.jp/english/prod-tech/product/cvo_top.html 40KΩ Max. at 25℃ 25℃±3℃ 1.0pF Typ. ■ PART NUMBERING SYSTEM CFS-206 / CFS-145 32768 D Z F B - □□□ Frequency Tolerance （at 25℃) Frequency Frequency Tolerance over Operating Temp. Range Package specification B Please specify the frequency in Hz. D E H ±20ppm (STD) ±10ppm ±5ppm Z CITIZEN management code Only Bulk Standard Spec. Ref. Code for internal use. Load capacitance (CL) B F V Y 6.0pF 12.5pF (STD) 8.0pF 7.0pF *Please contact us for specifications available. ■ Part Marking [standard] CFS-206 CFS-145 22ym ##### 22 : Manufacture's ID Code No marking y : The last digit of production year m : Production month (See Table.1) # : Production Lot No. Table.1 Month Code Jan Feb 1 2 … … Sep Oct Nov Dec 9 X Y Z ■ Handling Notes Mounting Bending Lead Soldering the body of cylinder type crystal unit must be strictly avoided as it may cause significant deterioration in characteristics of the product. Hold the body of crystal unit by hand, and the part to be bent with tweezers leaving more than 1.5mm of lead from the body case. (3.0mm is recommended) Rubber adhesive is recommended for mounting. Bend the lead 90°holding with the tweezers. Pulling the lead strongly may crack the hermetic seal glass at the root of the lead and may cause the airtightness and the characteristics to deteriorate. Product specifications are subject to change without notice. http://cfd.citizen.co.jp/english/prod-tech/product/cvo_top.html Rev.2