MicroFoot® Power MOSFETs Vishay Siliconix MicroFoot® Power MOSFETs offer low on-resistance (RDS(on)) in ultra-small and ultra-thin packages. The devices' compact outlines save PCB space and provide ultrathin profiles to enable slimmer and lighter portable electronics. Low on-resistance translates into lower conduction losses for reduced power consumption and longer battery life between charges. The Vishay Siliconix MicroFoot Power MOSFETs low on-resistance also means a lower voltage drop across the load switch to prevent an unwanted under-voltage lockout.