IRFP 20A, V, Ohm, N-channel Power MOSFET. This N-Channel enhancement mode silicon gate power field effect transistor is an advanced. Parameter. Max. Units. ID @ TC = 25°C. Continuous Drain Current, VGS @ 10V. ID @ TC = °C. Continuous Drain Current, VGS @ 10V. IRFP N-CHANNEL V – Ω – A TO PowerMesh™II MOSFET s. TYPICAL RDS(on) = Ω s. EXTREMELY HIGH dv/dt CAPABILITY.

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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. Irfp40 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: 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 just don’t remember if this is how a mosfet works too. Here is a mosfet I was thinking of buying. If anyone could dxtasheet me the vital information that I need to know about it, that would be very helpful.


Trying to remember programming C from 25yrs ago. The maximum specifications are just that, maximum that can’t be exceeded. They are considerably higher than what it will run with continuously. Read the data to see what the series resistance and possible current flow at a particular gate voltage. EG, at 2 volts on the gate the current is very low. At 5 volts it may be 5A while at 10 volts it may be 50A.

IRFP Datasheet – Vds=V, Power MOSFET – Vishay

It varies according urfp460 the device. With the arduino, you need is a logic level gate mosfet. It works with 5v on the gate and handles a few amps with ease.

I bought mine from RS Components. There are others but make sure they are fully on at 5v on the gate. When you remove the gate voltage, there is a time taken to discharge the gate capacitor internal. Therefore it is best to have a discharge resistor from gate to Gnd.


This is important especially when you use PWM as it will get excessively hot without the R. Johannesburg hams call me: I’ve been doing some reading, and I think for my purposes I’ll be needing datzsheet mosfet driver.

There’s so many different drivers to choose from. Any suggestions on a driver that works well with the arduino outputs? JimboZA on Feb 04, MarkT Brattain Member Posts: The key parameters you need to look at in a datasheet are: You may also be interested in the body-diode’s performance and the Vgs max and the plateau voltage usually only hinted at in graphs.


Its best to use a gate drive voltage about twice the plateau voltage as this gives roughly symmetrical switching times. You don’t need to look at the max current because if you do your sums right with Rds on you’ll never be anywhere near this, its an extreme thermal limit. And if dataaheet have an Internation Rectifier datasheet they lie blatantly about max current anyway.

I’m not using the mosfets to drive 24 volt robot motors. I’m using them for a load at v – v at 10amps. So I need the bigger mosfets. I am thinking of driving the mosfet gate using a push-pull setup with npn pnp BJT transistors. I am trying to find a 3 or 4 amp transistor that the arduino can turn on.

Here’s the datasheet stats for those transistors: I’m sure we’ve been here before with this, but I’ll suggest these drivers again to you from that other thread we were having discussions. So they work fine with the pwm from the arduino?

I hope they work with the mosfets I ordered.