The HUF76639S3ST-F085 from onsemi is a MOSFET with Continous Drain Current 50 A, Drain Source Resistance 23 to 26 milliohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -16 to 16 V, Gate Source Threshold Voltage 1 to 3 V. Tags: Surface Mount. More details for HUF76639S3ST-F085 can be seen below.