IRFA V N-channel A-FET / Substitute of IRF FEATURES. Avalanche Rugged Technology Rugged Gate Oxide Technology Lower Input Capacitance. THE PRODUCT DESCRIBED HEREIN AND THIS DATASHEET ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT ? IRFA datasheet, IRFA pdf, IRFA data sheet, datasheet, data sheet, pdf , Fairchild Semiconductor, N-CHANNEL POWER MOSFET.

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Is it possible to use two or maybe three IRF to handle more amperage? Thanks very much for your time. That 52 mOhms at dafasheet. But to be sure i had a question. With regard to 9V and 5V input, I presume you mean supply datasbeet. I bought it and it works with Arduino.

If you feed it with 15Volt the output voltage is around volt which will do the job. Should I try to use a BC for exemple to turn on the Mosfet like the schematic 3 and in this case when I put my output high the Mosfet is off, so I should put it Low to turn iirf530a my load, is it?

I am not sure what datasheet you looked at but I do not see a max of 4Volt, I see a ief530a of ca 20 Volt. It is not expensive: So no R1 and T1 from your diagram link? The only caveat using datashet AO parts, is their size: The datasheet indicates max Vgs 4V but the curve shows that at 5V the mosfet can deliver current way above my requirement.

My dilemma is am new to this field so is there any other better power MOSFET for high voltage switching application and driver for the same. As the can be fed with up to 18 Volt, it shouldnt be a big problem to use the to switch. Anyway, depending on your circuit, I am not sure if you need a logic level P fet as often there is transistor driving the mosfet.


Glad to be able to dataaheet A logic level mosfet means that it is designed to turn on fully from the logic level of a microprocessor. For the IRF it is even worse. I had a IRF Mosfet but now i understand why it became very hot. However it has a very low Rdson.

I should turn on a load some Ifr530a lamps in paralel with a Mosfet. At 8A it is not even breaking a sweat. At 10 volt it is 4mohm and the fet can take 45 amp, but at 4. Great, that is good to know.

It is not a true logic level mosfet, it needs some 10 volts. The question is the one joe provided a solution to in an earlier question, except just as you pointed out, his solution doesnt work because the emitter voltage will be close to 12V and the base voltage from the arduino will be 5V so the transistor will close. Then you can find the current in the datasheet? The simplest circuit is just a 12 V regulator but that is very inefficient. If ddatasheet instance you want to switch 5A in a 12V circuit and you only want to waste 0.

Would like to have a non inverting driver, do you have any recommendation how to solve this, daatasheet best IC driver for arduino. It already switches on at much lower voltages, albeit not completely, but the optimal voltage is around Volt. You could consider the FQP27P Thank you for this very good explanation. For example, when used with a high frequency PWM and high amps, careful testing must be done, because high frequency means more time spent in the linear zone, and these parts can if530a get hot and burn, differently of TO parts, that can also burn, but only after some minutes of overheating.


Using MOSFETS with TTL levels (5 Volt and 3.3 Volt)

Thanks for your contribution. I am using this converter: Normally the impedance of a FET is high enough to not lose any signal datasyeet that resistor. Joe, good idea, but as I picture your changes, the emittor will be at 12 Volt when open, while yr Arduino will set the basis at a max of 5Volt, which would cause the transistor to close again. This will need daasheet good heatsink if the load is on for more than a second or two, but it is no issue if it gets millisecond pulses every few seconds.

For a BC it is a bit on the edge. The dissipation then is 5x5x0.

You may iff530a consider the IRLZ It shows the same behaviour when I use 3. I would like to use it to switch car heated seat 12V, 8A.

Backyard controller design Eric’s Arcana and RiderX. But in reality you dont need that formula as it mainly has to do with the range wherein the FET DrainSource acts as a pure resistor. You are limited to a current of about mA.

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Sorry no T2 and R1. Yes im using Arduino to control the circuit. These transistors will invert the signal from the N-channel mosfet, ensuring no short circuits could happen. Nowadays more and more 3. I am getting almost 7V at the gate so no issues.

See the reference below: