The IPG20N04S4L-11 from Infineon Technologies is a MOSFET with Continous Drain Current 20 A, Drain Source Resistance 10.1 to 15.5 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 IPG20N04S4L-11 can be seen below.