FGAFx0N60 Field Stop IGBTs onsemi FGAFx0N60 650V Field Stop IGBTs use a novel field stop IGBT technology. These IGBTs feature high current capability, low saturation voltage, high input impedance, and fast switching. onsemi FGAFx0N60 IGBTs offer the optimum performance for solar inverters, UPS, welder, and PFC applications that require low conduction and switching losses.