The FDS8958B from onsemi is a MOSFET with Continous Drain Current -4.5 to 6.4 A, Drain Source Resistance 26 to 51 milliohm, Drain Source Breakdown Voltage -30 to 30 V, Gate Source Voltage -25 to 25 V, Gate Source Threshold Voltage -3 to 3 V. Tags: Surface Mount. More details for FDS8958B can be seen below.