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Also easier if you need to do high side switching. But where can I find K in the datasheet? Was that datashest same as for the mosfet?

IRF520 MOSFET. Datasheet pdf. Equivalent

Well, you would need to put an inverter before the circuit i provided, either by a logical gate or with yet another transistor.

The relatively cheap BUZ11 is also an irf502. What kind of lamp is it? Post as a guest Name.

I bought it and it works with Arduino. WhatRoughBeast 49k 2 28 The situation is actually datasehet bit worse than this indicates, since if you look closely at the data sheet, the threshold is specified to produce a drain current of uA, which is well below any useful load, so the gate voltage will actually have to be somewhat higher than spec for switching real loads.

And as i understand when you put 5 volt on the gate, the output on the source i presume is only 5Volt. Setting a temperature to a comfortable level arduino switches the mosfet on for sec followed by a 50sec off time.

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With regard to 9V and 5V input, I presume you mean supply voltage. Notify me of new comments via email.

IRF NTE Equivalent NTE POWER MOSFET N-CHANN – Wholesale Electronics

You are commenting using your WordPress. OK I try again: 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. I should turn on a satasheet some LED lamps in paralel with a Mosfet.

So, mistakes during development can be fatal. How can I find the current in the LED? Thanks in advance, Ruben.

What i like you to do first is to detach the pic-circuit and just put 5 Volt on the entrance of yr FET circuit, via say that ohm resistor, and see if then your lamp behaves the same. So no R1 and T1 from your diagram link? IRFZ44, and you want to switch somewhat higher voltages i. Looking at those graphs one can see that at a gate to source level of 5V Arduino levels the IRF is only capable of delivering 1 Amp, whereas it is specified for 5,6 Amps continuous current.

In general you want a MOSFET that has a low Rdson and switches fast at the available triggervoltage 5volt with ttl and ofcourse can take the voltage and current it will be exposed to.


If you come up with an idea I would be happy to hear it. At 10 volt it is 4mohm and the fet can take 45 amp, but at 4. Jrf520 STP3NA I do not know very well and I couldnt quickly find a readable datasheet, but though it doesnt seem to be a Logic level FET, from what I could see, it should open enough around igf520 volt already… but if you have a better datasheet, please check that.

Another thing to beware of in datasheets is Vthresh threshhold voltage. So, the bottom line is: As you can see, you need at least 4. Say that is 2 Satasheet. It seems mosfet get burned every time. Would be interested to hear how the FET holds out on 8 Amps. I even used feedback protective diode with motor. This will need a 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.

If the steppermotor does not draw too much, think about an ULN