The FDMS030N06B from onsemi is a MOSFET with Continous Drain Current 100 A, Drain Source Resistance 3 milliohm, Drain Source Breakdown Voltage 60 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 4.5 V. Tags: Surface Mount. More details for FDMS030N06B can be seen below.