irf540n, to-263, SMD FET, in order to prevent power MOSFET FET gate induced breakdown, requires all test equipment, workstations, electric iron, line itself must have a good grounding; pin in welding first welding source; connected to the circuit before, all the lead end of the tube to keep each other shorting state high voltage FET, and only then after the short circuit welding material removed; when the tube is removed from the shelf components, should be based on appropriate The way to ensure that the human body, such as the use of ground grounding ring; FET course, if the use of advanced gas heat and electric iron, welding FET is quite easy, and ensure safety; not turn off the power at the time, absolutely not The tube inserted or removed from the circuit circuit. More safety measures must be taken when using the FET. fqp13n50c large current FET, MOSFET, Fairchild MOSFET tube after more parallel, due to a corresponding increase in inter-electrode capacitance and distributed capacitance, high-frequency characteristics of the amplifier deteriorate IRFB4115 FET amplifier feedback prone to high frequency parasitic oscillations. To this end, the tube is generally parallel hybrid pipe not more than 4, and anti-parasitic oscillation resistor in series to each tube on the base or gate. Gate-source voltage JFET can not be reversed, you can save in the open state, while the insulated gate field effect transistor when not in use, because of its very high input resistance, shall each electrode short circuit, in order to avoid external electric field leaving the tube damage. High current FET FET _ _ are fertile Electronics Dongguan City is provided by Wal-Electronic Technology Co., Ltd. Dongguan City is Wal-Electronic Technology Co., Ltd. (www.dgmydz.com) strong, credible, FET and other industries in Dongguan, Guangdong has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the electronics are fertile and you hand into the brilliant, for a better future!