The RQ3P300BH from ROHM Semiconductor is a MOSFET with Continous Drain Current 10 to 39 A, Drain Source Resistance 11.9 to 24 milliohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for RQ3P300BH can be seen below.