HCM49

      The HCM49 is designed as at-cut crystal unit with SMD metal-can type.And also HCM49 would be RoHS compliant optional.
      HCM49 has three features.The first one is that it would have surface mount type of metal-can HC-49/U-S and high performance with the resistance weld sealing.The second one is that it would have automatic mounting and reflowable type.The third one is that it would be suitable for various applications such as communication devices, AV sevices, automotive devices and measuring instruments.That are all the features.
      Also there are some important absolute maximum ratings and electrical specifications of HCM49 which have been concluded into several points as follow.The first one is about its nominal frequency which woud be from 3.5MHz to 30.0MHz (fundamental) and from 30.001MHz to 50.0MHz (3rd overtone), to know the conditions need to contact us for the available frequency.The second one is about its frequency tolerance which would be +/-30ppm at 25°C.The third one is about its frequency tolerance over operating temperature range which would be +/-50ppm with condition of from -10°C to +60°C.The fourth one is about its operating temp. range which would be from -40°C to +85°C.The fifth one is about its storage temp. range which would be from -55°C to +125°C.The sixth one is about its motional (series) resistance which would be refer to the following table at 25°C.The seventh one is about its load capacitance which would be 18.0pF, to know the conditions need to specify your requirement.The eighth one is about its shunt capacitance which would be 7.0pF max.The next one is about its level of drive which would be 100W max.The next one is about its insulation resistance which would be 500M min with condition of DC 100V +/- 15V.The last one is about its aging (first year) which would be +/-5ppm max with condition of 25°C +/- 3°C.And so on.For more information about HCM49, please contact us.