The HP8M31 from ROHM Semiconductor is a MOSFET with Continous Drain Current -8.5 to 8.5 A, Drain Source Resistance 46 to 80 Milliohm, Drain Source Breakdown Voltage -60 to 60 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -3 to 3 V. Tags: Surface Mount. More details for HP8M31 can be seen below.