The SK8403170L from Panasonic Corporation is a MOSFET with Continous Drain Current 59 A, Drain Source Resistance 2.9 to 5.8 Milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.3 to 3 V. Tags: Surface Mount. More details for SK8403170L can be seen below.