The 2N5458 from New Jersey Semiconductor is a Junction Field Effect Transistor (JFET) with Drain Saturation Current 2.0 to 9.0 mA, Gate Source Voltage 25 V, Forward Transfer Admittance 1500 to 5500 mS, Drain Source Breakdown Voltage 25 V, Gate Current 10 mA. Tags: Through Hole. More details for 2N5458 can be seen below.