The 2N5457 from New Jersey Semiconductor is a Junction Field Effect Transistor (JFET) with Drain Saturation Current 1.0 to 5.0 mA, Gate Source Voltage 25 V, Forward Transfer Admittance 1000 to 5000 mS, Drain Source Breakdown Voltage 25 V, Gate Current 10 mA. Tags: Through Hole. More details for 2N5457 can be seen below.