The BUY15CS45B-01(P) from Infineon Technologies is a MOSFET with Continous Drain Current 45 A, Drain Source Resistance 23 to 53 Milliohm, Drain Source Breakdown Voltage 150 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.5 to 5 V. Tags: Through Hole. More details for BUY15CS45B-01(P) can be seen below.