The SGF15D100JDB from Solid State Devices is a GaN Power Transistor with Gate Threshold Voltage -27 to -8 V, Drain Source Voltage 1000 V, Drain Source Resistance 140 to 350 milli-ohm, Continous Drain Current 15 A, Pulsed Drain Current 58 A. Tags: Through Hole. More details for SGF15D100JDB can be seen below.