IRL 55V Single N-channel HexFET Power MOSFET in a TOAB Package. Logic-Level Gate Drive Advanced Process Technology Ultra Low. Infineon IRL MOSFET are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Infineon IRL MOSFET. IRL Overview. Buy online. Data Sheet – IRLEN. | pdf | KB. 55V Single N-Channel HEXFET Power MOSFET in a TOAB package.

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IRL – Infineon Technologies

Thank you for quick response. Good to also have a large value R between the gate and gnd to hold the Mosfet off in case the input is floating. Voltage on gate change resistance of FET but it’s never zero. Always ignore Vthr in datasheets for switching applications, its of no use and causes a lot of confusion Up till now i used IRL but is quite expensive and i can’t get them from our local datasheeg shop i had to order them from Farnell. FET’s do become “fully on”, generally Rds on is just the parasitic resistance of the contacts and bulk silicon.

(PDF) IRL2505 Datasheet download

No, I don’t answer questions sent in private messages but I do accept thank-you notes Hello, i am looking for some widely used FET which is fully open at 5V. If it is near to satasheet that’s mean that it is turned ON, if i can say it that way.


Previously i read this topic http: How can i calculate maximum PWM frequency for stable running? If i am planning to drive 12V motor with irl505 current consumption with this fet, i can understand this informations that way: You might be interested in an ebay offering that another forum member found recently, but the sellers seems to be running datashdet, only 4 more sets of 10 available.

MarkT Brattain Member Posts: I wouldn’t expect to be able to run them at their 12 amp max rating without some serious heatsinking, but for up to a couple of amps or so you can’t beat the 20 cent each cost.

If i am running it from Arduino it should be fully open at 5V. And how to calculate or which data should i look to know at which voltage is FET fully open? How is better or correct?

If i would control them with microcontroller it should be fully open if i use “digitalWrite HIGH” function. Ok, i think i understand it now.

IRLs are inexpensive, but will have a larger Rds on than the newer, more datasjeet parts. Can you suggest some cheaper and widely used alternative? What is man’s best friend? V ds – drain to source means maximum voltage for supplying motor for example V gs – gate to source means maximum voltage for driving FET Is that correct?


Generally a ohm gate resistor will protect the Arduino pin when connected to a high current MOSFET they can have many nF of gate capacitance, the resistor means the current rating for the Arduino pin won’t be exceeded during switching. Higher voltage means lover resistance. Is that kind of understanding correct?

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Avoid this confusion by using “on” and “off”! If you need fast PWM though you’ll need a MOSFET driver chip to boost the current to the gate otherwise the capacitance limits the speed of switching leading to large switching losses – PWM at 10kHz ideally wants switching times to be sub-microsecond, for instance, to keep switching losses sensible.

Using a small value R in the gate ckt is usually a good idea.

jrl2505 This is confusing if you are new – its the opposite from taps and valves used for fluids! Whether that happens at the Rds on measurement point is another question! Shouldn’t matter, if the currents aren’t too high.