The IPB50N12S3L-15 from Infineon Technologies is a MOSFET with Continous Drain Current 37 to 50 A, Drain Source Resistance 12.8 to 20.9 Mohms, Drain Source Breakdown Voltage 120 V, Gate Source Voltage 20 V, Gate Source Threshold Voltage 1.2 to 2.4 V. Tags: Through Hole. More details for IPB50N12S3L-15 can be seen below.