Model Number Nominal Frequency Range Frequency Stability Load Capacitance Operating Temperature   Temperature Stability Aging Package
JU-206 32.768 KHz/40 KHz               75 KHz/76.8 KHz ± 10ppm to ± 20ppm 12.5pF (TYP) ­10°C to ­60°C ± 20ppm (Standard) ± 3ppm Ø2.0 x 6.0mm
JU-308 32.768 KHz/40 KHz               75 KHz/76.8 KHz ± 10ppm to ± 20ppm 12.5pF (TYP) ­10°C to ­60°C ± 20ppm (Standard) ± 3ppm Ø3.0 x 8.0mm
JU-206 SMD 32.768 KHz/40 KHz               75 KHz/76.8 KHz ± 10ppm to ± 20ppm 12.5pF (TYP) ­10°C to ­60°C
± 20ppm (Standard)
± 3ppm Ø2.0 x 6.0mm
MC146 32.768 KHz ± 10ppm to ± 30ppm 12.5pF (TYP) ­40°C to ­85°C ± 20ppm (Standard) ± 3ppm 7.0 x 1.5  x 1.4mm
MC-306 32.768 KHz ± 10ppm to ± 30ppm 12.5pF (TYP) ­40°C to ­85°C
± 20ppm (Standard)
± 3ppm 3.2 x 1.5 x 0.9mm