The SMPJ113A from InterFET is a Junction Field Effect Transistor (JFET) with Drain Saturation Current 8 mA, Gate Source Voltage -40 V, Drain Source Resistance 80 to 100 Ohm, Gate Current 50 mA, Gate Reverse Current -2 nA. Tags: Surface Mount. More details for SMPJ113A can be seen below.