The RF4C050AP from ROHM Semiconductor is a MOSFET with Continous Drain Current -10 to 10 A, Drain Source Resistance 18 to 65 Milliohm, Drain Source Breakdown Voltage -20 V, Gate Source Voltage -8 to 0 V, Gate Source Threshold Voltage -3 to -1 V. Tags: Surface Mount. More details for RF4C050AP can be seen below.