The UT6KB5 from ROHM Semiconductor is a MOSFET with Continous Drain Current -5 to 5 A, Drain Source Resistance 37 to 80 Milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 2.5 V. Tags: Surface Mount. More details for UT6KB5 can be seen below.