SMD type and HC-49U/S • HC-49U/HC-49US • Oscillation mode: fundamental, 3rd, 5th overtone • Storage temperature range: -50 to 125 degrees Celsius • Frequency tolerance at 25 +/-3 degrees Celsius: +/-30ppm or +-50ppm • Frequency drift in operating temperature: +/-30ppm or +/-50ppm • Operation temperature range: o HC-49U: -20 to +75 degrees Celsius o HC-49u: -10 to +60 degrees Celsius • Equivalent series resistance: 30 to 900 ohms • Drive level: o HC-49u: 2mW o HC-49us: 600uW • Load capacitance: 12pF to 32pF • Shunt capacitance: 7pF maximum • Insulation resistance: 500M ohms/100VDC • Aging rate: +/-5ppm