irf640n, FET FET 5N60, power MOSFET 1. The role of FET can be used to enlarge. Since the FET amplifier input impedance is high, and therefore the coupling capacitor can be smaller capacity FET, without the use of an electrolytic capacitor. 2. FET high impedance input impedance is very suitable for conversion. Commonly used in the multi-stage amplifier input stage for impedance transformation. 3. FET can be used as a variable resistor. The FET can be conveniently used as a constant current source. 5. FET can be used as an electronic switch. g40n60, FET, power MOSFET FET 190N08, IGBT some FET source and drain can be used interchangeably, the gate voltage may be positive or negative, good flexibility than transistors. FET capable of operating at low current and low voltage conditions, and its manufacturing process can be easily put a lot of FET integrated on a silicon wafer, thus obtained field-effect transistor in the LSI in wide range of applications. FET 190N08, are fertile Electronics (certified), FET provided by the Dongguan City is Wal-Electronic Technology Co., Ltd. Dongguan City is Wal-Electronic Technology Co., Ltd. (www.dgmydz.com) is Dongguan, FET leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Wal-electronics leader in the positive with the staff warmly welcome all inquiries negotiations to create a positive future Wal-electron better.