The 2SK3003 from Sanken Electric is a MOSFET with Continous Drain Current -18 to 18 A, Drain Source Resistance 130 to 175 Ohm, Drain Source Breakdown Voltage 200 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Through Hole. More details for 2SK3003 can be seen below.