Help selecting a n-channel mosfet and resister Answered
Been a while. . .
Anyways I was looking for some guidance on selecting an N-channel mosfet, and also what resistor to use when I'm applying voltage to the gate. So I'm working some long LED strips, and I need the mosfet to be able to handle at least 7 amps, so I was hoping for like a 10 amp mosfet or so. I just didn't want to guy buy the first mosfet I found on digikey, I was just hoping for some cheap good options or popular ones. I needs to be able to do PWM.
Also I don't know where in the datasheets to find the information on what resistor to use on the gate. For instance I see people using anything from a 1K to a 5K resister with a TIP120. How do you select that information? I will be using an 5v output from my Arduino.
So after searching ebay I found the IRFZ44N mosfet, 55v and 49A. I know this is way over my needed specs but I can get 50 of them for 10 bucks. Steal. Since it's so overrated what problems might I run into if any?
What I've found so far:
IRF740 - 400v 10A