It is packaged using the Tape & Reel (TR) method since it is a clock IC. This clock generator will sustain a maximum temperature of NOT SPECIFIED when reflown. Logic circuits based on PLL BASED CLOCK DRIVER logic use this electronic frequency generator.
SI51218-A1MAGMR Features
SI51218-A1MAGMR Applications
There are a lot of Silicon Labs SI51218-A1MAGMR Clock Generators applications.