The RM1A4N150S6 from Rectron Semiconductor is a MOSFET with Continous Drain Current 1.4 A, Drain Source Resistance 380 to 520 milliohm, Drain Source Breakdown Voltage 150 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for RM1A4N150S6 can be seen below.