The SMF473 from Solitron Devices is a MOSFET with Continous Drain Current 14 to 23 A, Drain Source Resistance 0.20 to 0.23 ohm, Drain Source Breakdown Voltage 400 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Through Hole. More details for SMF473 can be seen below.