The DMTH4004SPSQ from Diodes Incorporated is a MOSFET with Continous Drain Current 31 to 100 A, Drain Source Resistance 2.3 to 2.7 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for DMTH4004SPSQ can be seen below.