The HUF75345S3S from onsemi is a MOSFET with Continous Drain Current 75 A, Drain Source Resistance 6 to 7 milliohm, Drain Source Breakdown Voltage 55 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for HUF75345S3S can be seen below.