The MTB030A03DFA6-0-T1-G from Cystech Electronics is a MOSFET with Continous Drain Current 4.2 to 5.3 A, Drain Source Resistance 22 to 77 milli-ohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 2.5 V. Tags: Surface Mount. More details for MTB030A03DFA6-0-T1-G can be seen below.