The FDMS9620S from onsemi is a MOSFET with Continous Drain Current 16 to 18, Drain Source Resistance 13 to 21.5 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 3 V. Tags: Surface Mount. More details for FDMS9620S can be seen below.