The SiZF640DT-T1-GE3 from Vishay is a MOSFET with Continous Drain Current 33 to 159 A, Drain Source Resistance 1 to 2.4 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -16 to 20 V, Gate Source Threshold Voltage 1 to 2.4 V. Tags: Surface Mount. More details for SiZF640DT-T1-GE3 can be seen below.