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PSpice Model for SST201

Discussion in 'CAD' started by [email protected], May 30, 2005.

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  1. Guest

    I've been searching for a spice device model for SST201, VISHAY
    SILICONIX, an N-Channel JFETs. Any such model or substitute exist?
    thanks
    bea
     
  2. I think this is a j201. I think the sst is refering to the sot-23
    package.

    ..MODEL J201 NJF(Beta=1.621m Betatce=-500m Rd=1 Rs=1 Lambda=2.236m
    Vto=-600m Vtotc=-2.5m Is=114.5f
    + Isr=1.091p N=1 Nr=2 Xti=3 Alpha=506.8u Vk=251.7 Cgd=4.667p M=227.1m
    + Pb=500m Fc=500m Cgs=2.992p Kf=0.6042f Af=1)


    I did a quick check on the data sheet and Vto appears to be consistant
    with this.

    Kevin Aylward

    http://www.anasoft.co.uk
    SuperSpice, a very affordable Mixed-Mode
    Windows Simulator with Schematic Capture,
    Waveform Display, FFT's and Filter Design.
     
  3. Guest

    How do I associate this model with the part? If I right click for
    properties, "Edit Spice Model" option is grayed out/non-selectable. Is
    there another way to add the model?
    Thanks
     
  4. This is only greyed out if you open the model browser from the symbol
    properties dialog. You can use the blue "Md" button, or main menu
    "Components\Model Library" to open the model editor directly, this will
    ungrey tie button, or see below.
    In SS you don't really have to do anything as the model is already there
    under the alternate name j201.

    If are adding a new model to SS, you can do one of two things:

    1 put the model in a single file with an extension of .lib or .mod, and
    then drag drop the file from Windows Explorer to the SS main window.
    Your done. It will show up in the file browser. SS automatically
    attaches symbols to those types of models.

    or

    2 In the model file browser (left main window), right click on a model
    in a model file folder, and go "edit model file". This pops up the txt
    file within the SS main frame. Paste in the model text and go save. Your
    done.

    Its best to put all your new models in your own file so that SS don't
    overwrite them in a updated install.

    Kevin Aylward

    http://www.anasoft.co.uk
    SuperSpice, a very affordable Mixed-Mode
    Windows Simulator with Schematic Capture,
    Waveform Display, FFT's and Filter Design.
     
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