The RM3401 from Rectron Semiconductor is a MOSFET with Continous Drain Current -4.2 A, Drain Source Resistance 47 to 130 milliohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage -1.3 to -0.7 V. Tags: Surface Mount. More details for RM3401 can be seen below.