IRF Datasheet, IRF MOSFET N-Channel Transistor Datasheet, buy IRF Transistor. ⑥ Uses IRF data and test conditions. Electrical Characteristics @ TJ = 25°C (unless otherwise specified). Parameter. Min. Typ. Max. Units. The following post explains the main features of mosfet IRF which It’s technical specifications may be understood with the following data.

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(PDF) IRF3205 Datasheet download

I use a IRF transistor, which might be a bit of an overkill, but it was the smallest I had. The LED is to easily see if the valve is open or closed. When I connected the gate pin of the transistor directly to the 12V power source the circuit worked as intended and the valve opened. Post as a guest Name.

IRF Datasheet(PDF) – International Rectifier

Home Questions Tags Users Unanswered. Email Required, but never shown. However I build the exact same project some months ago and used daya exact same parts – the same resistances, the same transistor type and the same valve and it worked perfectly with a 5V gate voltage.

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I dta the transistor to be broken, but I switched it out several times and the results were the same. The arduino outputs 5V which is just over the threshold voltage of V Datasheet: Try your circuit in this form: Running your Arduino at 5 V this should work ok out to a couple of Amps. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

You cannot drive the IRF in the manner shown.

Thanks a lot, now the circuit works exactly as I wanted! Sign up using Email and Password. I learned from another itf3205 here that this makes sense, because a higher gate voltage will let more current flow through the transistor.

IRF Transistor: correct threshold voltage – Electrical Engineering Stack Exchange

By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. I built this circuit as part of an automatic irrigation system and I am not sure how high the gate voltage should be: My basic idea is that if the soil gets to dry the arduino sets the gate voltage, which turns the transistor on and the valve opens.

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If the circuit is connect as in the picture only 0. Sign up or log in Sign up using Google. Sign up using Facebook.

The 5 volts seem to be to low to let enough current flow for the valve, which drains around 2. Looking at the details in the datasheet you need to understand that the V GS is applied between the Gate and source of the N-Channel FET, you can look at Figure 1 to see the switching characteristics.