The LSU404 from New Jersey Semiconductor is a Junction Field Effect Transistor (JFET) with Gate Source Voltage 50 V, Forward Transfer Admittance 2000 to 7000 mS, Continous Drain Current 0.5 to 10 mA, Drain Source Breakdown Voltage 50 V, Gate Current 10 mA. Tags: Through Hole. More details for LSU404 can be seen below.