The HD840U with MOSFET N Trench 500V 8A (Tc) 4V @ 250uA 850 mΩ @ 4A, 10V TO-252-2 (DPAK) RoHS is a power Mosfet manufactured by Haolin. It is widely used in many power circuits due to its high voltage, high current and low on-resistance capabilities. The HD840U has a maximum voltage rating of 500V, a maximum current rating of 8A, a 4V threshold voltage, a 250uA gate charge, a 850mΩ on-resistance, a 10V maximum forward gate voltage, and a RoHS compliant package. It also has an isolation distance of 8mm, and is provided in a TO-252-2 DPAK package. The HD840U provides improved power conversion efficiency and power density over older generation Mosfets, making it an ideal choice for low power and high efficiency applications.