The FDMS3660S from onsemi is a MOSFET with Continous Drain Current 13 to 30 A, Drain Source Resistance 1.8 to 8 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 2.2 to 2.7 V. Tags: Surface Mount. More details for FDMS3660S can be seen below.