The JAN2N3821 from Solitron Devices is a Junction Field Effect Transistor (JFET) with Gate Source Voltage -30 V, Forward Transfer Admittance 1500 to 4500 µs, Continous Drain Current 0.5 to 2.5 mA, Gate Current 10 mA, Gate Reverse Current 0.1 nA. Tags: Through Hole. More details for JAN2N3821 can be seen below.