CamLight said:Hmmm, interesting...
The ebay page shows, IMHO, a genuine IRFB4110.
But based on the photo of the one on your meter, I think he sent you counterfeits.
What current were you running through the FET when you got that 3mOhm Rds-on value?
What was the temperature (roughly) of the FET?
I'm curious how your FETs compare to the genuine and counterfeits I tested (earlier in the thread) at 10A and 20A.
FAS said:CamLight said:Hmmm, interesting...
The ebay page shows, IMHO, a genuine IRFB4110.
But based on the photo of the one on your meter, I think he sent you counterfeits.
What current were you running through the FET when you got that 3mOhm Rds-on value?
What was the temperature (roughly) of the FET?
I'm curious how your FETs compare to the genuine and counterfeits I tested (earlier in the thread) at 10A and 20A.
I tested the same FET that is on the attached foto.
As my video shows , I put 1.12A (from 1 li-ion cell with 3Ohm resistor) into FET and measure 3.3mV at pins close to FET body, and 4mV at end of pin (only one pin has 0.5mOm resistanse). temps around is 30°C.
I do not have another type of 4110 for tests.
OK, I will try high current test later.liveforphysics said:Your picture definately shows a counterfeit FET.
You gotta pass some stronger currents through them to get some decent voltage resolution in the resistance reading.
Sorry, I gave up trying to interpret the test conditions in the video as soon as I realized I couldn't speak the language.FAS said:I tested the same FET that is on the attached foto.
As my video shows , I put 1.12A (from 1 li-ion cell with 3Ohm resistor) into FET and measure 3.3mV at pins close to FET body, and 4mV at end of pin (only one pin has 0.5mOm resistanse). temps around is 30°C.
I do not have another type of 4110 for tests.
bobale said:
whatever said:I put the genuine and unknown pics side by side,
only difference is in the writing style and placement, I haven't seen any clones with the black moulding before, I would think maybe genuine,
genuine has 920P and unknown 029P which might be a typo? , if its a clone its a damn good one,
testing breakdown voltage or resistance would be good tests to do
I agree.whatever said:testing breakdown voltage or resistance would be good tests to do
I did a bunch of tests with all those FETs that were sent to me, should still be up here somewhere.liveforphysics said:I will try to get some numbers up for genuine IR 4110 parts sometime this week. I do not have any fakes to test, so somebody else will have to take that on.