The 2N5020 from New Jersey Semiconductor is a Junction Field Effect Transistor (JFET) with Drain Saturation Current -0.3 to -1.2 mA, Gate Source Voltage 25 V, Forward Transfer Admittance 1 to 1.35 mS, Gate Current 50 mA, Gate Reverse Current 1 nA. Tags: Through Hole. More details for 2N5020 can be seen below.