Model Number Nominal Frequency Range Frequency Stability Load Capacitance Operating Temperature Temperature Stability Aging Package HC-49SMD 3.0 MHz to 75 MHz ± 10ppm to ± 20ppm 9 to 30 pF 20°C to 85°C ± 30ppm to ± 50ppm ± 3ppm 11.5 x 4.65 x 4.3mm HC-49SSMD 3.0 MHz to 75