The SiB456DK from Vishay is a MOSFET with Continous Drain Current 6.3 A, Drain Source Resistance 153 to 310 Milliohm, Drain Source Breakdown Voltage 100 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.6 to 3 V. Tags: Surface Mount. More details for SiB456DK can be seen below.