The HUF76439S3ST from onsemi is a MOSFET with Continous Drain Current 75 A, Drain Source Resistance 10 to 15 milliohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -16 to 16 V, Gate Source Threshold Voltage 1 to 3 V. Tags: Surface Mount. More details for HUF76439S3ST can be seen below.