AT-CUT CRYSTAL UNIT (SMD • Ceramic Package) CS325 3000pcs/reel ■FEATURES 7High-density SMD type. 7Reliable ceramic package and excellent environmental characteristics. 7Suitable for various applications such as communication devices, AV devices and other equipment. Life-size ■DIMENSION [mm] ■SOLDER PAD LAYOUT [mm] 4−1.0 3.2±0.1 ＃3 ＃3 ＃4 ＃1 ＃2 ＃2 ＃1 1.15 0.45 4−0.9 2.5±0.1 1.15 ＃4 0.55±0.05 Internal connection (Top View) ＃4 ＃3 ＃1 ＃2 1.4 0.8 1.4 ■STANDARD SPECIFICATIONS Model Item f0 Nominal Frequency Conditions CS325 13.0MHz∼54.0MHz（Fundamental） Need to contact us for the available frequency Frequency Tolerance △f/f0 ±30ppm at 25˚C Frequency Tolerance over Operating Temperature Range △f/f0 ±30ppm −10℃∼＋60℃ Operating Temperature Range TOPR −40℃∼＋85℃ Storage Temperature Range TSTR −55℃∼＋125℃ Motional (series) resistance R1 Refer to the following table at 25˚C Load capacitance CL 16.0pF, 18.0pF Need to specify your requirement Shunt capacitance C0 5.0pF Max. Level of drive DL 10μW（100μW Max.） Insulation Resistance IR 500MΩMin. DC100V±15V △f/f0 ±5ppm Max. 25℃±3℃ Aging (first year) ■MOTIONAL (SERIES) RESISTANCE (R1) Frequency Range ESR 13.0MHz≦f0＜16.0MHz 16.0MHz≦f0＜20.0MHz 20.0MHz≦f0＜30.0MHz 30.0MHz≦f0＜54.0MHz 150ΩMax. 120ΩMax. 80ΩMax. 50ΩMax. http://www.citizen.co.jp/english/crystal/index.html 14