Clock ICs are packaged using the Tray method. The peak reflow temperature (Cel) amounts to 260 to be essentially indestructible. The uPs/uCs/Peripheral IC clock generator incoporates is CLOCK GENERATOR, PROCESSOR SPECIFIC.
SI5335A-B10319-GM Features
SI5335A-B10319-GM Applications
There are a lot of Silicon Labs SI5335A-B10319-GM Clock Generators applications.