The MMBFJ177LT1G from onsemi is a Junction Field Effect Transistor (JFET) with Drain Saturation Current -1.5 to -20 mA, Gate Source Voltage 25 V, Drain Source Resistance 300 Ohm, Gate Reverse Current 1.0 nA, Power Dissipation 0.225 W. Tags: Surface Mount. More details for MMBFJ177LT1G can be seen below.