The RM3402 from Rectron Semiconductor is a MOSFET with Continous Drain Current 4 A, Drain Source Resistance 45 to 110 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage 0.6 to 1.4 V. Tags: Surface Mount. More details for RM3402 can be seen below.