The IPI80N04S4-04 from Infineon Technologies is a MOSFET with Continous Drain Current 80 A, Drain Source Resistance 3.9 to 4.6 Mohms, Drain Source Breakdown Voltage 40 V, Gate Source Voltage 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for IPI80N04S4-04 can be seen below.