The SiHB4N80E from Vishay is a MOSFET with Continous Drain Current 4.3 A, Drain Source Resistance 1100 to 1270 Milliohm, Drain Source Breakdown Voltage 800 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for SiHB4N80E can be seen below.