The DI045N03PT-AQ from Diotec Semiconductor is a MOSFET with Continous Drain Current 45 A, Drain Source Resistance 3.4 to 6.8 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.2 to 2.5 V. Tags: Surface Mount. More details for DI045N03PT-AQ can be seen below.