The STB80NF03L-04T4 from STMicroelectronics is a MOSFET with Continous Drain Current 80 A, Drain Source Resistance 0.0035 to 0.0055 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage 20 V, Gate Source Threshold Voltage 1 V. Tags: Through Hole. More details for STB80NF03L-04T4 can be seen below.