It is packaged using the Tray method since it is a clock IC. This clock generator ic can sustain 260 degrees of temperature during reflowing. The uPs/uCs/Peripheral IC clock generator incoporates is CLOCK GENERATOR, PROCESSOR SPECIFIC.
SI5335D-B09259-GM Features
SI5335D-B09259-GM Applications
There are a lot of Silicon Labs SI5335D-B09259-GM Clock Generators applications.