The IPB160N04S2-03 from Infineon Technologies is a MOSFET with Continous Drain Current 160 A, Drain Source Resistance 2.4 to 2.9 Mohms, Drain Source Breakdown Voltage 40 V, Gate Source Voltage 20 V, Gate Source Threshold Voltage 2.1 to 4 V. Tags: Surface Mount. More details for IPB160N04S2-03 can be seen below.