The Crystal Unit (Through Hole) datasheet provides specifications for the HC-49/U (U Series) crystal unit. The crystal unit is designed for microcontrollers and processors in consumer electronics and set-top box PCs.
Specifications
The HC-49/U (U Series) crystal unit has a frequency range of 3.579545 MHz to 12.500 MHz, with a tolerance of 10 ppm at 25°C. The operating temperature range is -40°C to 85°C, and storage temperature range is -55°C to 125°C.
Frequency Range and ESR
The crystal unit has a different ESR (Equivalent Series Resistance) depending on the frequency range. The ESR ranges from 20 Max to 100 Max, and the frequency range is divided into several sections (Fundamental, 3rd Sth Overtone, and others) with corresponding ESR values.
Oscillation Mode and Aging
The crystal unit operates in Fundamental or 3rd Sth Overtone mode, and its aging is ensured to be within 0.2 ppm per year.
Dimension and Package
The package dimensions of the crystal unit are 10.24 mm (max) x 3.8 mm (max), with a material that complies with RoHS directives and is halogen-free.
Manual:
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