The QM3301S from uPI Semiconductor is a MOSFET with Continous Drain Current 5.5 to 7 A, Drain Source Resistance 15 to 30 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 QM3301S can be seen below.