KHz RANGE CRYSTAL UNITS CITIZEN. (CYLINDER TYPE) CFS-308, CFS-206, CFS-145, CFV-206 FEATURES: * Because of their excellent shock resistance and low power consumption, the units are ideal for portable equipment. * Features superior characteristics indigenous to tun- ing fork-type quartz crystal units. MAPPLICATIONS: * Permits use as a clock source for communication = equipment, AV equipment, OA equipment, measur- s ing instruments and various types of clocks. 7 Life-size @ DIMENSIONS: (UNIT=mm) ) = o | Y S , ik g Jf 3 |. $0.35 @2.1MAX os, | 7 hd Me, aaa #1.5MAX ] 4 = CFS-308 ___8.2MAx 100 BeMAK 10 a - CFS-206, CFV-206 CFS-145 m STANDARD SPECIFICATIONS atcha roe CFS-308 | CFS-206 CFS-145 | CFV-206 | Conditions Shock resistance Drop test of 3 times on a hard board from 75cm height or shock test of 30006 x 0.3ms x '/2 sin wave x 3 directions | depending on frequency. Nominal frequency fo 32.768KHz 30KH2~100KHz | Che oat Us for Frequency tolerance Af/fo +20ppm +30ppm At 25C Frequency vs. Temperature characteristics Af/fo See drawing 10C~+60C Turnover temperature Tm 25C+5C Temperature coefficient B 0.034 +0.006ppm/C? Operating temperature range Torr 10C~+60C Storage temperature range Tste 40C~+85C Equivalent series resistance Ri: 35kQ MAX. 40kQ MAX. | 50kQ2 MAX. At 25C Load capacitance on 12.5pF TYP. 8.0pF TYP. | 12.5pF TYP. Please specify Motional capacitance C; 3.5fF TYP. 3.0fF TYP. 2.5fF TYP. 1~4fF TYP. Shunt capacitance Co | 1.60pF TYP. | 1.35pF TYP. | 1.00pF TYP. |0.8~1.7pF TYP.| aie gepencing Capacitance ratio y 460 TYP. 450 TYP. 400 TYP. | 425~800 TYP. Drive level DL 1p W MAX. Insulation resistance IR 500MQ MIN. DC100V+15V Aging (First year) Afifo +3ppm MAX. | +5ppm MAX. 25C+3C | Sealing 1 x 10*yPa-m?/s MAX. | +5ppm MAX. Conditions will vary | | FREQUENCY vs TEMPERATURE CURVE 10 25 60 TEMP 0 (ec) = 50 + A f/f,(pom)