The GA50JT12-247 from Navitas Semiconductor is a Junction Field Effect Transistor (JFET) with Continous Drain Current 50 to 100 A, Drain Source Breakdown Voltage 1200 V, Drain Source Resistance 0.02 to 0.035 Ohm, Gate Current 3.5 A, Power Dissipation 116 to 583 W. Tags: Through Hole. More details for GA50JT12-247 can be seen below.