IRFA Transistor Datasheet, IRFA Equivalent, PDF Data Sheets. MOSFET. Parameters and Characteristics. Electronic Component Catalog. Vishay IRFA MOSFET are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for Vishay IRFA MOSFET. IRFA. TOAB. SMPS MOSFET. HEXFET. ®. Power MOSFET l Switch Mode Power Supply (SMPS) l Uninterruptable Power Supply.

Author: Dotaur Keran
Country: Monaco
Language: English (Spanish)
Genre: Relationship
Published (Last): 9 June 2014
Pages: 384
PDF File Size: 15.69 Mb
ePub File Size: 6.52 Mb
ISBN: 653-4-40661-314-3
Downloads: 81860
Price: Free* [*Free Regsitration Required]
Uploader: Arak

Then try supplying the NPN base from the arduino pin. Here are some examples, to illustrate what is available http: To tackle this we should use a current limiting capacitor, I have a used a value of here. I didn’t have any luck with the transistors that got from Radio Shack, I actually just ended up getting the original IRFs that I had to work by using 4 in parallel to prevent them from overheating. The water pump is rated at 12V and 2. Hence it is mostly used with Arduino and other microcontrollers for logic switching.

IRFA Datasheet PDF – Vishay Semiconductors

Use Google Search box in upper right side of this page. Such statements are not binding statements about the suitability of products for a particular application. Something rated V datashset A and with logic-level drive would be much more useful to you Current flows in through Drain. Another problem you have is that the IRF has an enormous Ron of 0.

I’m having some very weird issues with using PWM analogWrite and the delay function.

B, Mar This datasheet is subject to change without notice. If not, what do you do, and again, what are the proper components to use?


Irf840a datasheet pdf

Perhaps I should post this in a separate topic, but it is a continuation of the project addressed above and may relate to the way that I am using power. Reliability data for Silicon Technology and Package Reliability represent a composite of all qualified locations.

Also of note is that the delay function seems to work just fine if I remove the PWM pin so that it is not connected to anything. If so, what are proper components to use?

When a gate voltage is applied these pins gets closed. I solved this by simply adding 3 more IRF’s in parallel. Please note that some Vishay documentation may still make reference to the Dagasheet definition.

To the maximum extent permitted by applicable law, Vishay disclaims i any and all liability arising out of the application or use of any product, ii any and all liability, including without limitation special, irf8440a or incidental damages, and iii any and all implied warranties, including warranties of fitness for particular purpose, non-infringement and ief840a.

Since this an N-Channel mosfet the load that has to be switched in this case a motor should always be connected above the drain pin.

So my next question is what is the proper method for giving a motor more and less power? My problem is that it never seems to be in an off state, as soon as I connect the power, the pump turns on and the MOSFET gets really hot. TL — Programmable Reference Voltage. I maybe could have solved this with proper use of diodes, but after a few hours of messing around, I was still stumped. Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining applications or for any other application in which the failure of the Vishay product could result in personal injury or death.


Meaning, they can be turned on or turned off by supplying the required Gate threshold voltage VGS. I combed over the code because oftentimes problems like this are due to coding errors, but I have not been able to find any problems in the code.

Do you do what I did and turn the power on and off really fast?

IRFA datasheet,datasheets manu Page:1==Power MOSFET==[VISHAY] pdf datenblatt – –

I looked at the spec for a the IRF, and it looks like it needs 10V to switch it on. Here is datassheet part of the code where the delay is not working, I set it up to eliminate any outside factors: You might need something to increase the gate voltage for lower internal resistance.

Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk. Both lowered resistance, but still kept maybe 2k ohms. When I first heard of MOSFETs and saw some ddatasheet, I said there is no way they can carry the load that they are rated at, it takes thick wire to carry significant amounts of power, not these tiny little pins The last problem that I had was that the thing would overheat pretty bad after a just a few moments of the motor being on.