The QM2402K from uPI Semiconductor is a MOSFET with Continous Drain Current 3.8 to 4.8 A, Drain Source Resistance 22 to 38 milli-ohm, Drain Source Breakdown Voltage 20 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage 0.5 to 1.2 V. Tags: Surface Mount. More details for QM2402K can be seen below.