The FBG20N04A from EPC Space is a GaN Power Transistor with Gate Threshold Voltage 0.8 to 2.8 V, Drain Source Voltage 200 V, Drain Source Resistance 68 to 130 milli-ohm, Continous Drain Current 4 A, Pulsed Drain Current 16 A. Tags: Surface Mount. More details for FBG20N04A can be seen below.