The EPC2203 from Efficient Power Conversion is a GaN Power Transistor with Gate Threshold Voltage 0.8 to 2.5 V, Drain Source Voltage 80 V, Drain Source Resistance 53 to 80 milli-ohm, Continous Drain Current 1.7 A, Pulsed Drain Current 17 A. Tags: Die. More details for EPC2203 can be seen below.