X49SD4MSD2SC

HC-49US Features xternal dimensions: 11.5 x 4.5 x 3.68mm. E Frequency range: 3.579545MHz ~ 64MHz. ． Surface mount type crystal units. ． A great number of standard frequencies. 12 YX .0 C XX X ． High frequency pullability and low equivalent series resistance. ． Highly mass production capability. ． Applications: PC, STB, LCDM and Cable Modem. Electrical Specifications Item / Type HC-49US 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 Ω Ω Ω Ω Ω Ω Ω Ω Dimensions 4.5 YXC 12.0XXX 3.5 Units: mm 1/2  HC-49US ★ PART NUMBER GUIDE 部件号示例 Frequency Stability Pin Overall (ppm) Quartz Crystal Resonator Dimensions Frequency Load Capacitance (Hz) (Pf) X 12M 49SD H C -4 9 U S=11.5 × 4 .5 DI P SEAM TYPE e.g. X4 9 SD12MSD2SC S D 2 Frequency tolerance B ±10PPM D ±20PPM Load Capacitance (Pf) X 7.4pF G 12.5pF L 9pF 10pF M 12pF O P 15pF Material Operating Temp. Range S C Operating temperature C -20~ +70 ℃ -40~ +85 ℃ I -40~ +125℃ A -40~ +105℃ F ★ WAVE SOLDERING PROFILE 波峰焊特性 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