Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Not that simple, most MOSFETs are avalance rated to some degree, for example the IRL540 can take a single shot of 440mJ without dying.avalanche current flows and your FET blows up.
Not that simple, most MOSFETs are avalance rated to some degree, for example the IRL540 can take a single shot of 440mJ without dying.
To put this into perspective, you could switch 20A though a 2mH load or 663mA through a huge 2H load with no back EMF diode and it won't die.
ok here is my question so that you will finaly understand. on a square wave where is the maximun heat dissipation rise time, saturation, or fall time, or off. asuming a transistor switch.That's a form thermal runaway which is a different phenomena to breakdown voltage.
You've got one hell of a leaky MOSFET, the IRL540 only leaks 25µA at 100V 25° which is just 2.5mW.
Even so if you use a good sized heat sink thermal runaway is unlikely to occur.
It was good idea to bring it up as it is certainly something you should be careful of at higher voltages.