The SGF46E70S1 from Solid State Devices is a GaN Power Transistor with Gate Threshold Voltage 3.3 to 48 V, Drain Source Voltage 700 V, Drain Source Resistance 30 to 72 milli-ohm, Continous Drain Current 46 A, Pulsed Drain Current 240 A. Tags: Surface Mount. More details for SGF46E70S1 can be seen below.