HC49-4H crystals share the same base outline as the industrystandard HC49 crystal. The crystal uses at AT-cut strip crystal with an hermetically sealed can. HC49-4H crystals provide a low cost source of system clock frequency.

• Frequency Range: 3.2MHz to 70.0MHz Oscillation Mode AT-Cut
• Fundamental: 3.2MHz to 30.0MHz BT-Cut
• Fundamental: 24.0MHz to 48.0MHz AT-Cut 3rd
• Overtone: 27.0MHz to 70.0MHz
• Calibration Tolerance at 25ºC AT-Cut: ±30ppm (tolerance to ±10ppm is available.)
• BT-Cut: ±30ppm Frequency Stability AT-Cut: ±30ppm over -10° to +60°C (Stability to ±10ppm is available)
• BT-Cut: ±100ppm pver -10 to +60°C Load Capacitance (CL): Series or from 8pF to 32pF
• Ageing at 25°C: ±3ppm maximum, 1st year, ±1ppm per year thereafter.
• Drive Level: 100mWatts typ., 500mWatts max.
• Storage Temperature Range: -50° to +105°C
• Crystal Holder: Resistance-weld hermetic seal
• RoHS Status: Compliant