The MTB030N03N3-0-T1-G from Cystech Electronics is a MOSFET with Continous Drain Current 3 to 3.8 A, Drain Source Resistance 22 to 80 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 MTB030N03N3-0-T1-G can be seen below.