X49SM2712MSD2SC

HC-49SMD Features ． External dimensions: 11.4 x 4.8 x 3.8 mm. ． Frequency range: 3.579545MHz ~ 64MHz. C YX XX X 12.0 ． Surface mount type crystal units. ． A great number of standard frequencies. ． High frequency pullability and low equivalent series resistance. ． Highly mass production capability. ． Applications: PC, STB, LCDM and Cable Modem. Electrical Specifications Item / Type HC-49SMD Nominal Frequency Range 3.579545 ~ 64 MHz Vibration Mode AT Fundamental Load Capacitance 12 pF, 20 pF, or specify Frequency Tolerance (at 25 ℃) ±1 0 ppm, ± 20 ppm, or specify Frequency Versus Temperature Characteristics ± 20 ppm, or specify Operating Temperature - 20 ~ + 70 ℃ , - 40 ~ + 85 ℃ , or specify Storage Temperature - 40 ~ + 85 ℃ , or specify Shunt Capacitance 7 pF Max. Level Of Drive 1 ~ 500 μW (100 μW typical) Frequency Aging (at 25 ℃) ± 3 ppm / year Max. Equivalent Series Resistance(ESR) 3rd Overtone Fundamental 3.579545 ~ 4 MHz 150 Ω Max. 20 ~ 25 MHz 100 Ω Max. 4 ~ 5 MHz 120 Ω Max. 25 ~ 64 MHz 80 Ω Max. 5 ~ 6 MHz 100 Ω Max. 6 ~ 7 MHz 80 Ω Max. 7 ~ 10 MHz 60 Ω Max. 10 ~ 27 MHz 40 Ω Max. Dimensions Units: mm 1/2  HC-49SMD ★ PART NUMBER GUIDE 部件号示例 Frequency Stability Overall (ppm) Quartz Crystal Resonator Dimensions Frequency Load Capacitance (Hz) (Pf) X 12M 49SM H C -4 9 SMD=11.4 × 4 .35 SMD SEAM TYPE e.g. X4 9 SM12MSD2SC S Pin Material Operating Temp. Range 2 S C D Frequency tolerance B ±10PPM D ±20PPM Load Capacitance (Pf) X 7.4pF G 12.5pF L 9pF 10pF M 12pF O P 15pF Operating temperature C -20~ +70 ℃ -40~ +85 ℃ I -40~ +125℃ A -40~ +105℃ F ★ REFLOW SOLDERING PROFILE 回流焊特性 Temperature (℃) 260℃ max 220℃ 180℃ ③ ① ② Times (S) Pb free reflow A ① Preheat 160~180℃ ② Primary heat 220℃ 60sec. max ③ Peak 10sec. max. 260℃ 2/2 120sec. max