The SMPJ175 from InterFET is a Junction Field Effect Transistor (JFET) with Drain Saturation Current -7 to -70 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 SMPJ175 can be seen below.