QESM49H4

The QESM49H4 is designed as HC49 SMD crystal with SMD packaged.

Some electrical characteristics of QESM49H4 have been concluded into several points as follow. The first one is about its frequency range which would be min 3.200MHz and max 75.000MHz. The next one is about its frequency tolerance (at 25°C) which would be min ±10 ppm and typ ±30 ppm and max ±50 ppm refer to ordering information. The next one is about its temperature stability which would be min ±10 ppm and typ ±30 ppm and max ±50 ppm refer to ordering information. The next one is about its operating temperature range which would be typical -20°C/+70°C and would be max -40°C/+85°C refer to ordering information. The next one is about its storage temperature range which would be from -40°C to +85°C. The next one is about its shunt capacitance which would be max 7.0pF. The next one is about its load capacitance which would be from 10pF to 32pF or series refer to ordering information. The next one is about its drive level which would be typ 100W and would be max 500W. The next one is about its aging (first year) which would be max ±5 ppm ref at 25°C. The next one is about its insulator resistance which would be min 500M at 100Vdc. That are all the main characteristics.

Also mechanical conditions of QESM49H4 have been concluded into several points as follow. The first one is about its vibration which would be 10g, 10Hz to 2KHz according to standard CEI 68-2-63. The next one is about its shocks which would be 100g, 6ms according to standard CEI 68-2-27.

And something about its ESR vs. frequency range and mode of vibration about it. For the frequency range from 3.200 to 4.499MHz its mode of vibration would be fund / AT and its max ESR would be 150. For the frequency range from 4.500 to 5.999MHz its mode of vibration would be fund / AT and its max ESR would be 120. And so on. If you have any question or suggestion or want to know more information please contact us.