The SD11721 from Solitron Devices is a MOSFET with Continous Drain Current 58 A, Drain Source Resistance 50 to 80 milli-ohm, Drain Source Breakdown Voltage 1200 V, Gate Source Voltage -5 to 20 V, Gate Source Threshold Voltage 2.2 to 3.2 V. Tags: Through Hole. More details for SD11721 can be seen below.