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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Dinah, that your lights do not light up immediately seems kinda odd, but could be a habit of the lamp you are using. If for instance you want to switch 5A in a 12V circuit and you only want to waste 0. The irf doesnt need 20 Volt tu turn on. It seems mosfet get burned every time. The datasheet mentioned a current between 21 Amperes Amperes for driving led.
How can I find the current in the LED? I would like to use it to switch car heated seat 12V, 8A.
Using MOSFETS with TTL levels (5 Volt and 3.3 Volt)
It already switches on at much lower voltages, albeit not completely, but the optimal voltage is around Volt. If it does open at 3 volt and your PIC supplies that, adding a transistor is not really necesary and if you do it doesnt need to be the BC, can be a regular dagasheet transistor too, like the That is not surprising. At 8A it is not even breaking a sweat. The battery is ok and gives a steady 4 volts.
Another thing to beware of in datasheets is Vthresh threshhold voltage.
IRF530A MOSFET. Datasheet pdf. Equivalent
Good luck, but dont hesitate to ask again shld you need further advice.
Using the transistor to drive the gate with higher voltage solved the problem. The gate source resistor is purely to make a predefined state and to avoid the entrance to float I do not know the PIC18F that well, but what is important is the Output voltage it has on its pins.
The circuit should be robust enough to support the load during a few minutes. Though that seems like the FET is suitable for an Arduino, I do not think it is an optimal combination. That indeed is odd and I irf530s to wonder if it is the IRL that is shutting down or something else.
It contains an opto-isolator and does all the gate driving. That 52 mOhms at 2. Glad to be able to contribute! 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.
It is not a true logic level mosfet, it needs some 10 volts. Yes im using Arduino to control the circuit. Not an ideal choice, but a good one.
According to your post and the datasheet, the IRLN should have no problem supplying the current at this voltage, right? Irf350a 5 Volt GS it can however only take some 4.
Oh i fully agree David. More and more cheap Mosfets. OK I try again: The driver will have only 2 inputs, allowing off, fw, rev and brake.