The IPG20N06S4-15 from Infineon Technologies is a MOSFET with Continous Drain Current 20 A, Drain Source Resistance 12.9 to 15.5 Mohms, Drain Source Breakdown Voltage 60 V, Gate Source Voltage 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for IPG20N06S4-15 can be seen below.