Mosfet Irf840 Pin Diagram. These devices are well suited for high efficiency switching dc dc converters and switch mode power supplies. Since the mosfet is for switching high current high voltage loads it has a relatively high gate voltage hence cannot be used directly with a i o pin of a cpu.
The mosfet could switch loads that consume upto 10a it can turned on by provide a gate threshold voltage of 10v across the gate and source pin. The following figure shows the pinout diagram of irf840 mosfet. The bodyside is always connected with the source pin.
The mosfet could switch loads that consume upto 8a it can turned on by provide a gate threshold voltage of 10v across the gate and source pin.
So we generally call the mosfet a three terminal device. So we generally call the mosfet a three terminal device. The flow of current is in the. The drain and source are heavily doped p region and the body or substrate is of n type.
