AT-CUT CRYSTAL UNIT (SMD * Plastic Package) CM309S 1000pcs/reel FEATURES 7Embeded with heat resistant cylinder type crystal bring highly stable characteristics. 7Automatic mounting and reflowable type. 7Suitable for various applications such as communication devices, AV devices, automotive devices and measuring instruments. Life-size DIMENSION [mm] SOLDER PAD LAYOUT [mm] 12.40.1 #4 Internal connection #3 #4 #3 4.40.2 1.8 #1 1.8 #2 #2 1.5 1.7 9.40.1 0.8 0.8 1.8 3.60.1 1.5 1.8 #1 7.6 1.0 Do not connect to external with #2 and #3 STANDARD SPECIFICATIONS Model Item Nominal Frequency CM309S Conditions 3.5MHz34.0MHz Fundamental f0 27.0MHz70.0MHz 3rd Overtone Need to contact us for the available frequency Frequency Tolerance f/f0 Frequency Tolerance over Operating Temperature Range f/f0 Operating Temperature Range TOPR -4085 Storage Temperature Range TSTR -55125 Motional (series) resistance R1 Refer to the following table at 25C Load capacitance CL 16.0pF, 18.0pF Need to specify your requirement Shunt capacitance C0 7.0pF Max. Level of drive DL 100W Insulation Resistance IR 500MMin. DC100V15V f/f0 5ppm Max. 253 Aging (first year) 30ppm at 25C below 6.0MHz50ppm -1060 above 6.0MHz30ppm See figure 3 in P4 MOTIONAL (SERIES) RESISTANCE (R1) Frequency Range Mode R1 3.5MHzf04.0MHz 4.0MHz f0 6.0MHz 6.0MHzf010MHz 27MHzf036MHz 36MHzf070MHz Fundamental Fundamental Fundamental Fundamental Fundamental 3rd Overtone 3rd Overtone 200Max. 150Max. 100Max. 50Max. 50Max. 100Max. 80Max. http://cfm.citizen.co.jp/english/product/pr02.html 15 10MHzf027MHz