The QS8M31 from ROHM Semiconductor is a MOSFET with Continous Drain Current -3 to 3 A, Drain Source Resistance 93 to 266 Milliohm, Drain Source Breakdown Voltage -60 to 60 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -3 to 2.5 V. Tags: Surface Mount. More details for QS8M31 can be seen below.