The IPLU250N04S4-1R7 from Infineon Technologies is a MOSFET with Continous Drain Current 250 A, Drain Source Resistance 1.2 to 1.7 Mohms, Drain Source Breakdown Voltage 40 V, Gate Source Voltage 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for IPLU250N04S4-1R7 can be seen below.