The 2SK3019 from FrelTec is a MOSFET with Continous Drain Current 0.115 A, Drain Source Resistance 8 to 13 ohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 0.8 to 1.5 V. Tags: Surface Mount. More details for 2SK3019 can be seen below.