The 2N4118A from Solitron Devices is a Junction Field Effect Transistor (JFET) with Drain Saturation Current 0.08 to 0.24 pA, Gate Source Voltage -40 V, Continous Drain Current 1 nA, Gate Current 50 mA, Gate Reverse Current -1 to -10 pA. Tags: Through Hole. More details for 2N4118A can be seen below.