The QM2420K from uPI Semiconductor is a MOSFET with Continous Drain Current 2.3 to 3 A, Drain Source Resistance 70 to 160 milli-ohm, Drain Source Breakdown Voltage 20 V, Gate Source Voltage -8 to 8 V, Gate Source Threshold Voltage 0.3 to 1 V. Tags: Surface Mount. More details for QM2420K can be seen below.