The P40F10SN from Shindengen America is a MOSFET with Continous Drain Current 40 A, Drain Source Resistance 8.5 to 10.7 milliohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Through Hole. More details for P40F10SN can be seen below.