The 2N4860 from Central Semiconductor is a Junction Field Effect Transistor (JFET) with Drain Saturation Current 20 to 100 mA, Gate Source Voltage 2.0 to 6.0 V, Drain Source Resistance 40 Ohm, Gate Current 50 mA, Power Dissipation 1.8 W. Tags: Through Hole. More details for 2N4860 can be seen below.