The FQB44N10 from onsemi is a MOSFET with Continous Drain Current 43.5 A, Drain Source Resistance 30 to 39 milliohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -25 to 25 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for FQB44N10 can be seen below.