The TDG650E15BEPF from Teledyne e2v HiRel Electronics is a GaN Power Transistor with Gate Threshold Voltage 1.1 to 2.6 V, Drain Source Voltage 650 V, Drain Source Resistance 100 to 258 milli-ohm, Continous Drain Current 15 A, Pulsed Drain Current 30 A. Tags: Die. More details for TDG650E15BEPF can be seen below.