Posted January 26, 20205 yr heelo, i have 4kva ,48 v offgrid inverter and due to high voltage on ac side some spike ckt and other ckt board has been butnt. what is the alternative model of fb3307z transisitor as i couldnt find the exact match. tyhank you
January 26, 20205 yr 5 hours ago, sandp said: what is the alternative model of fb3307z transisitor as i couldnt find the exact match. The full part number is IRFB3307Z; they might not have room on the part to legibly add the "IR". MOSFET part numbers obsolete pretty fast these days. See this post for recommended replacement part numbers; both mentioned replacement parts still seem to be available. That post, and the one it updates, discuss the important parameters and how Weber selected the recommended replacements. Edit: you should also heed the warnings about checking all the gate resistors and driver parts; these often fail when the MOSFET itself fails. Check the index of the linked topic (first post in the topic). Edited January 26, 20205 yr by Coulomb
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