The QM3003K from uPI Semiconductor is a MOSFET with Continous Drain Current -3.8 to -4.8 A, Drain Source Resistance 26 to 45 milli-ohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -1.0 to -2.5 V. Tags: Surface Mount. More details for QM3003K can be seen below.