The 2N5019 TO-18 3L RoHS from Linear Systems is a Junction Field Effect Transistor (JFET) with Drain Saturation Current -5 mA, Gate Source Voltage 30 V, Continous Drain Current -3 mA, Drain Source Resistance 150 Ohm, Gate Current -10 mA. Tags: Through Hole. More details for 2N5019 TO-18 3L RoHS can be seen below.