The STP45NF06 from STMicroelectronics is a MOSFET with Continous Drain Current 38 A, Drain Source Resistance 22 to 28 Milliohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Through Hole. More details for STP45NF06 can be seen below.