The SiHB186N60EF from Vishay is a MOSFET with Continous Drain Current 18 A, Drain Source Resistance 168 to 193 Milliohm, Drain Source Breakdown Voltage 600 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 5 V. Tags: Surface Mount. More details for SiHB186N60EF can be seen below.