I am planning on purchasing some mosfets for a number of projects I have on the go at the moment. I want to make sure that I am buying the right mosfets for the job, because these things can be rather expensive.
I want to make sure that I am reading and understanding the datasheets, and was hoping some of you people could clarify things for me.
The basics that I need to know are the following:
Maximum continuous voltage the mosfet will allow from Source to Drain
Maximum continuous current the mosfet will allow from Source to Drain
The voltage / current needed to fully turn the mosfet ON
The turn on / turn off time
Do mosfets work strictly fully ON or fully off? Or do they operate like a transister, where there is a region that it is only slightly on, depending on the gate current / voltage?
Also, will the mosfet turn off when the gate voltage is dropped to 0? Or does the source voltage have to be 0 as well for the mosfet to turn off? I remember there is some type of device that only needs a pulse at the gate to be turned on, and won’t turn off until the source voltage = 0… I just don’t remember if this is how a mosfet works too.
Here is a mosfet I was thinking of buying… If anyone could tell me the vital information that I need to know about it, that would be very helpful.
Here is a link to the DATA SHEET
mosfet datasheet.pdf (103 KB)