The PN4393 TRA from Central Semiconductor is a Junction Field Effect Transistor (JFET) with Drain Saturation Current 5.0 to 30 mA, Gate Source Voltage 40 V, Drain Source Resistance 100 Ohm, Gate Current 50 mA, Gate Reverse Current 0.1 nA. Tags: Through Hole. More details for PN4393 TRA can be seen below.