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Thread: IRF3205 Original or Counterfeit?

  1. #1
    New Member New Member nick#18 is on a distinguished road
    Join Date
    May 2020

    IRF3205 Original or Counterfeit?

    Hello, I have a 2000w power inverter that use IRF3205 x24 to make power. I had a lightning strike just some meters away from my appliance and i had some of them fried almost completely by the earth wire. The inverter operates normally for some light loads but when i need some more power fault indication light is on.
    I ordered 8 of them from a local store in order to replace the bad ones but while i was waiting for my order to come i decided to remove all the mosfets from the pcb to take a measurement by multimeter on them to check if all the others act the same.
    Finally i had completely different readings from all of them and i proceed to a second order of 16 more mosfets from the same shop.
    When i collected both of the orders i found out that something is going wrong. The first 8 mosfets seems to be ok and original but the other 16 look poor and not even the irf logo seems to be ok.
    Could someone tell me by the photos what is wrong with them?

    Left: 1st order 8pcs that seems to be the same with the fried mosfets
    Right: Second complementary order of 16 mosfets

    Images could be found here:

  2. #2
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