The RMD7N40DN from Rectron Semiconductor is a MOSFET with Continous Drain Current 20 A, Drain Source Resistance 16 to 29 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 3 V. Tags: Surface Mount. More details for RMD7N40DN can be seen below.