The QM2542N5 from uPI Semiconductor is a MOSFET with Continous Drain Current 7.4 to 9.2 A, Drain Source Resistance 6.3 to 16.1 milli-ohm, Drain Source Breakdown Voltage 20 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage 0.4 to 1.2 V. Tags: Surface Mount. More details for QM2542N5 can be seen below.