The Crystals and Oscillatorsis 20MHz is new and original,and stock. Frequency Tolerance (at 25 degrees Celsius): ±30 ppm Frequency Stability Over Operating Temperature Range: ±30 ppm Operating Temperature Range: -10 to +60 degrees Celsius Aging (at 25 degrees Celsius): ±5 ppm/year Maximum Storage Temperature Range: -40 to +85 degrees Celsius Shunt Capacitance (Co): 7 pf Maximum Insulation Resistance: 500 MOhms Minimum at 100V DC Drive Level: 100 microWatts Typical Load Capacitance (Cl): 20 pf 

crystal