The RF6C055BC from ROHM Semiconductor is a MOSFET with Continous Drain Current -5.5 to 5.5 A, Drain Source Resistance 19.5 to 63.6 Milliohm, Drain Source Breakdown Voltage -20 V, Gate Source Voltage -8 to 8 V, Gate Source Threshold Voltage -1.2 to -0.5 V. Tags: Surface Mount. More details for RF6C055BC can be seen below.