The QM3001S from uPI Semiconductor is a MOSFET with Continous Drain Current -3.9 to -4.9 A, Drain Source Resistance 35 to 78 milli-ohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -1.2 to -2.5 V. Tags: Surface Mount. More details for QM3001S can be seen below.