HC35

      The HC35 crystals are designed to be used in communications, aerospace and defence applications.The crystal blank used in HC35 packages is capable of being manufactured to close tolerances.It is also readily produced with custom frequencies and specifications.
      It has five features.The first one is that it would have wide frequency range.The second one is that it would have small profile, low-mass package.The third one is that its close tolerances could be easily achieved.The fourth one is that it would have the fully customisable specification.The last one is that it woud have the industry-standard package.That are all the features.
      Some important general specofocations have been concluded into several points as follow.The first one is about its frequency range which would have the minimum of 8.0MHz and the maximum of 250MHz which means the range would be from 8.0MHz to 250 MHz.The second one is about its calibration tolerance at 25ºC which would be from ±3ppm.The third one is about its frequency stability over temp which would be from ±3ppm.The fourth one is about its operating temperature range which would be from 0°C ~ +50°C to -55°C~+125°C.The fifth one is about its shunt capacitance (C0) which would be 4pF maximum.The sixth one is about its load capacitance (CL) which would be series or from 8pF to 32pF(Customer specified CL).The seventh one is about its ageing which would be ±2ppm max 1st year and would be ±1ppm typical per year after.The eighth one is about its drive level which would be 100uW maximum.The ninth one is about its shock which would be 100g/6ms.The tenth one is about vibration which would be 10g/1.5mm, 10~500Hz, 3 axis.The eleventh one is about its holder which would be resistance-weld, hermetic seal.The last one is about its supply format which would be bulk pack.That are all the important general specifications.
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