The JAN2N4859 from Solitron Devices is a Junction Field Effect Transistor (JFET) with Gate Source Voltage -30 V, Continous Drain Current 50 to 175 mA, Drain Source Resistance 25 Ohm, Gate Current 50 mA, Gate Reverse Current -0.25 nA. Tags: Through Hole. More details for JAN2N4859 can be seen below.