The SiB4317EDK from Vishay is a MOSFET with Continous Drain Current -4.5 A, Drain Source Resistance 54 to 125 Milliohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage -1.3 to -0.6 V. Tags: Surface Mount. More details for SiB4317EDK can be seen below.