The 2SK3799 from Toshiba is a MOSFET with Continous Drain Current 8 A, Drain Source Resistance 1000 to 1300 milliohm, Drain Source Breakdown Voltage 900 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Through Hole. More details for 2SK3799 can be seen below.