TUNING FORK CRYSTAL UNITS (SMD • Plastic Package) CM200C . CM250C RoHS compliant 3000pcs/reel ■ FEATURES 7Molding a heat resistant cylinder with resin. 7Most appropriate for clock source for portable equipment with low power consumption. Life-size ■ DIMENSION [mm] ■ SOLDER PAD LAYOUT [mm] 7.9±0.1 Internal connection #3 #4 #3 #1 #2 1.3 4.2 1.3 #2 5.5±0.5 （1.25） 0.5 0.5 1.9 2.4±0.1 （1.25） 1.3 #1 1.9 3.7±0.1 #4 （0.9） Do not connect to external with #2 and #3 ■ STANDARD SPECIFICATIONS Item Nominal Frequency Frequency Tolerance Model CM200C CM250C Conditions f0 32.768kHz 30kHz∼100kHz Need to contact us for the available frequency in CM250C △ f/f0 ±20ppm ±30ppm at 25˚C CL 12.5pF 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 50KΩMax. Level of drive DL Load capacitance Aging (first year) Shunt capacitance Need to specify your requirement at 25˚C 1μW Max. △ f/f0 ±3ppm Max. ±5ppm Max. 25℃±3℃ C0 1.35pF Typ. 0.8pF ∼ 1.7pF Typ. Depend on frequency http://cfm.citizen.co.jp/english/product/pr02.html