The EPC2103 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 4 to 5.5 milli-ohm, Continous Drain Current 30 A, Pulsed Drain Current 195 A. Tags: Die. More details for EPC2103 can be seen below.