The SGF48N10 from Solid State Devices is a GaN Power Transistor with Gate Threshold Voltage 0.8 to 2.5 V, Drain Source Voltage 100 V, Drain Source Resistance 5.5 to 6 milli-ohm, Continous Drain Current 48 A, Pulsed Drain Current 340 A. Tags: Surface Mount. More details for SGF48N10 can be seen below.