The NTE451 from NTE Electronics is a Junction Field Effect Transistor (JFET) with Drain Saturation Current 4 to 20 mA, Gate Source Voltage -25 V, Forward Transfer Admittance 3500 to 7000 mS, Continous Drain Current 30 mA, Gate Reverse Current -0.2 to -1.0 nA. Tags: Through Hole. More details for NTE451 can be seen below.