The EPC2054 from Efficient Power Conversion is a GaN Power Transistor with Gate Threshold Voltage 0.8 to 2.5 V, Drain Source Voltage 200 V, Drain Source Resistance 32 to 43 milli-ohm, Continous Drain Current 3 A, Pulsed Drain Current 32 A. Tags: Die. More details for EPC2054 can be seen below.