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I would like to use a transistor in LTSpice and I don't want to choose a specific one but keep the NPN with parameters added to the model. So basically, my command would be : .model Q NPN(..). I would like to set the Vcesat parameter but it doesn't seem to appear as a parameter on LTSpice's model of transistor. Does anybody know how to fix Vcesat ? Thank you for your answer and time !

Sarah Javic
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  • Did you try Vceo as parameter? – Pai May 26 '20 at 17:27
  • Doesn't seem to really change anything. Plus it's not in the list of parameters that LTSpice gives for transistors.. – Sarah Javic May 26 '20 at 18:25
  • You need to show the entire text of the default LTspice model. We need to see what kind of model is being used before we can talk about appropriate model parameters. – Elliot Alderson May 26 '20 at 19:29
  • See this question and, in particular, Oli Glaser's answer. Be sure to read the document he linked. It's really not that simple, but not that complicated, either. But if you're expecting to change a parameter and be done with it, you're out of luck. – a concerned citizen May 26 '20 at 19:34
  • There are 3 pages of parameters for LTSpice transistor model from page 147 to page 150 on this help doc for LTSpice : http://rincon-mora.gatech.edu/classes/ltspice.pdf
    Yes I was expecting to maybe link one of the parameters from this pages to Vcesat but doesn't seem to work that easily..     – Sarah Javic May 27 '20 at 09:25

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