The MTA42N02N3-0-T1-G from Cystech Electronics is a MOSFET with Continous Drain Current 3.4 to 4.3 A, Drain Source Resistance 30 to 90 milli-ohm, Drain Source Breakdown Voltage 20 V, Gate Source Voltage -8 to 8 V, Gate Source Threshold Voltage 0.35 to 1 V. Tags: Surface Mount. More details for MTA42N02N3-0-T1-G can be seen below.