The NVMFS4C308NT1G from onsemi is a MOSFET with Continous Drain Current 55 A, Drain Source Resistance 4 to 7 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.3 to 2.1 V. Tags: Surface Mount. More details for NVMFS4C308NT1G can be seen below.