The IPD50N04S4L-08 from Infineon Technologies is a MOSFET with Continous Drain Current 49 to 50 A, Drain Source Resistance 6.2 to 10.5 Mohms, Drain Source Breakdown Voltage 40 V, Gate Source Voltage 16 V, Gate Source Threshold Voltage 1.2 to 2.2 V. Tags: Surface Mount. More details for IPD50N04S4L-08 can be seen below.