The SiZ348DT-T1-GE3 from Vishay is a MOSFET with Continous Drain Current 14.8 to 30 A, Drain Source Resistance 5.93 to 10.19 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -16 to 20 V, Gate Source Threshold Voltage 1 to 2.4 V. Tags: Surface Mount. More details for SiZ348DT-T1-GE3 can be seen below.