The Si8406DB from Vishay is a MOSFET with Continous Drain Current 16 A, Drain Source Resistance 26 to 42 Milliohm, Drain Source Breakdown Voltage 20 V, Gate Source Voltage -8 to 8 V, Gate Source Threshold Voltage 0.4 to 0.85 V. Tags: Surface Mount. More details for Si8406DB can be seen below.