The SML0505FN from TT Electronics is a MOSFET with Continous Drain Current 16 A, Drain Source Resistance 50 milliohm, Drain Source Breakdown Voltage 50 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Through Hole. More details for SML0505FN can be seen below.