The SGR15E90M from Solid State Devices is a GaN Power Transistor with Gate Threshold Voltage 0.8 to 2.5 V, Drain Source Voltage 900 V, Drain Source Resistance 160 to 350 milli-ohm, Continous Drain Current 15 A, Pulsed Drain Current 58 A. Tags: Through Hole. More details for SGR15E90M can be seen below.