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Josh
Reviewed in the United States on February 6, 2024
Replaced some dead components with these and my appliance works good as new, quality feeling product
DG
Reviewed in the United States on January 16, 2024
These FETs failed immediately under normal operating conditions. Fake product.
T R N
Reviewed in the United States on September 3, 2023
I have yet to find IRFB4227PBF that aren't counterfeit. This, and all other Chinese knockoffs, had a chip 1/4 the size of the original and blew up right away. Original IRFB4227PBF has a chip that's nearly the width of the heatsink tab.
John A. Justin
Reviewed in the United States on December 22, 2023
I'm using these MOSFETS as backups in a battery spot welder that I designed to discharge a 1 Farad capacitor. I use 10 of them in parallel. They have a very low on resistance 24 milli ohms which is necessary to dump large welding currents. I haven't had to replace any yet.
Dan Leiwe
Reviewed in the United States on November 3, 2023
These are not the same as true IR manufactured MOSFET they have a higher on resistance than the ones made by Infineon that was International Rectifier. The part number my be the same but they do not work the same. I used them as replacements in a mono-block car amp and all they did was get very hot this is a class D amp. I then ordered the real parts from Mouser they worked just fine with no over heating. They should work as just power switches jut not in a class D amp.
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