The EPC2059 from Efficient Power Conversion is a GaN Power Transistor with Gate Threshold Voltage 0.7 to 2.5 V, Drain Source Voltage 170 V, Drain Source Resistance 6.8 to 9 milli-ohm, Continous Drain Current 24 A, Pulsed Drain Current 102 A. Tags: Die. More details for EPC2059 can be seen below.