The RS1E170GN from ROHM Semiconductor is a MOSFET with Continous Drain Current -40 to 40 A, Drain Source Resistance 5.1 to 10.3 Milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.2 to 2.5 V. Tags: Surface Mount. More details for RS1E170GN can be seen below.