The SMF404 from Solitron Devices is a MOSFET with Continous Drain Current 15 A, Drain Source Resistance 760 to 900 milli-ohm, Drain Source Breakdown Voltage 1000 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 3.5 to 6.5 V. Tags: Through Hole. More details for SMF404 can be seen below.