Vishay / Siliconix SIH Series MOSFETs offer 4th generation E series technology in a standard TO package. The devices supply a 30% reduction in conduction losses, increased power density, and higher efficiencies. The Vishay / Siliconix SIH series MOSFETs are designed for power supplies, including Switch Mode (SMPS), Power Factor Correction (PFC), and server/telecom.