The 2N5021 from New Jersey Semiconductor is a Junction Field Effect Transistor (JFET) with Drain Saturation Current -1 to -3.5 mA, Gate Source Voltage 25 V, Forward Transfer Admittance 1.5 to 6 mS, Gate Current 50 mA, Gate Reverse Current 1 nA. Tags: Through Hole. More details for 2N5021 can be seen below.