Iwaver 02M FET’s

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    • August 29, 2008 at 12:59 pm #12953
      Dangerous Dave
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      • Posts: 229

      not that anyone would really care lol, but the FET’s on an Iwaver 02M board are the well known SI 4562’s.

      I checked this out today cos I think I blew them using the 02M board to run my cursed Mini X.

      Surprisingly, it powered the Mini X along quite well, but a rock jammed in a driveshaft and upped the amp draw.

      I have to give the 02M board some credit, as a Mini X motor is about 70t, running a hefty 4WD drivetrain and on 5 cells! The ability to power a mini servo makes it perfect for the Mini X, and would be the perfect partner for a 2s lipo pack mounted on the other side of the chassis 😉

      Just ordered a pack of these “new” SP8M4 FETs, will put a 2×2 stack on the 02M and see what happens…

    • August 31, 2008 at 2:08 am #61796
      Admin
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      • Posts: 5952

      You should love the SP8M4 Fets. A 2×2 stack can run some serious heat. Me and a buddy of mine Flashsp-2 are in agreement that these SP8M4 Fets are the best FETs out right now aside from installing a Nelly on your car.:D
      cheers :beer:

    • August 31, 2008 at 2:20 am #61727
      jimmy
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      • Posts: 99

      hey wat about the spider there supoesed to be better than a 6×2 or somthing

    • August 31, 2008 at 8:11 am #61728
      Dangerous Dave
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      • Posts: 229

      a strip of FETs from ausmicro shop is cheaper than a turbo, and can modify more than one car.

      Performance may not be quite up there, but is still impressive.

    • August 31, 2008 at 9:11 am #61729
      Admin
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      • Posts: 5952

      jimmy – I don’t own a Spider, but I do own a few Nelly turbos. The Nelly EVO is similar but slightly larger than the Spider v4.0. Yes, the Spider can handle a lot of power. Ausmicro has the Spider v4.0 listed as outperforming a 8×2 stack of IRF7317 mosfets with a resistance of ~10mOhms.:D I believe a 2×3 stack of the SP8M4 FETs would be pretty-comparable to the Spider v4.0 specs. The thing is, and I’ve had this happen to me, if you are running a blazing-hot wind (hotter-than /= plasmatomic-range) then you run the risk of having heat build up in the FET stack which can lead to failure. A Nelly/Spider is a bit safer since the FETs are separate from the PCB, and are laid-out in a single layer for superior thermal characteristics.
      Dangerous Dave is right though. For around $5US (If you install them yourself) a 2×2 SP8M4 stack is a killer deal.

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