It is packaged using the Tray method since it is a clock IC. A maximum temperature of 260 can be sustained by this clock generator ic during reflowing. The number of uPs/uCs/PEripheral ICs contained in this clock generator is CLOCK GENERATOR, PROCESSOR SPECIFIC.
SI5335B-B09990-GM Features
SI5335B-B09990-GM Applications
There are a lot of Silicon Labs SI5335B-B09990-GM Clock Generators applications.