BF999 Spice Model

Discussion in 'Electronics Resources' started by Bruce Griffing, Jan 8, 2013.

  1. Bruce Griffing

    Thread Starter New Member

    Jun 16, 2009
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    I have searched far and wide to find a BF999 RF MOSFET model. I am presently using a very simple equation based model, but would like something more realistic. Any help would be appreciated.
     
  2. bertus

    Administrator

    Apr 5, 2008
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  3. Bruce Griffing

    Thread Starter New Member

    Jun 16, 2009
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    Bertus -
    Thanks for the reply. I should have mentioned that I had already found that file - it contains a spice s parameter file. It is intended for higher frequencies than I am using in this case. I realize that the BF999 will have a higher noise figure at lower frequencies, but that does not matter for my application.
    Bruce
     
  4. Ron H

    AAC Fanatic!

    Apr 14, 2005
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    Why did you choose BF999 for your application, as opposed to another device?
     
  5. Bruce Griffing

    Thread Starter New Member

    Jun 16, 2009
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    I wanted a MOSFET to work up to 50MHz with low input and output capacitance. It also has ~20mS of transconductance.
     
  6. Ron H

    AAC Fanatic!

    Apr 14, 2005
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    It does look like a nice part. I doubt you will find a spice model. I remember seeing RF BJTs that had s-parameter specs. I couldn't find spice models for them.
     
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