ug303UG303 200V; 3.0A Ultra-fast Recovery Glass Passivated Rectifier; Ultra Fast Switching For Hh EfficiencyUG303: EFM32 Tiny Gecko TG11 Starter Kit User's Guide The SLSTK3301A Starter Kit is an excellent starting point to get familiar with the EFM32™ Tiny Gecko TG11 Microcontroller .