The GPI65015DFN from GaNPower International is a GaN Power Transistor with Gate Threshold Voltage 0.9 to 2.9 V, Drain Source Voltage 650 V, Drain Source Resistance 85 to 110 milli-ohm, Continous Drain Current 15 A, Total Charge 3.54 nC. Tags: Surface Mount. More details for GPI65015DFN can be seen below.