The SMPJ174 from InterFET is a Junction Field Effect Transistor (JFET) with Drain Saturation Current -20 to -125 mA, Gate Source Voltage 30 V, Drain Source Resistance 85 Ohm, Gate Current 50 mA, Gate Reverse Current 1 nA. Tags: Surface Mount. More details for SMPJ174 can be seen below.