onsemi FGH4L75T65MQDC50 Field Stop 4th Gen Mid-Speed IGBT offers optimum performance with low conduction and switching losses. FGH4L75T65MQDC50 utilizes field stop 4th generation IGBT technology and generation 1.5 SiC Schottky Diode technology in a TO-247 4-lead package. This IGBT transistor is for high-efficiency operations in various applications, especially totem-pole bridgeless PFC and inverters.