In the case of LTspice, if the model file contains only a single model, it should be named with the. A Spice model file is nothing more than a text file with a different extension.
Once you have found the model you want to use, you need to make sure it is in the correct format with the correct extension. The best format to use is the Spice3 model, however the PSpice model will usually work in LTspice as well. Different design tools use different versions of Spice, hence, part manufacturers will often have the Spice file for their part available in a couple different formats. Sometimes you will have to switch tabs, or it will simply be link on their part’s web page such in the following screenshot:Īn unfortunate characteristic of the Spice world is that over time it has become fairly fragmented. The second method is to directly search the part manufacturer’s web page for the part. If the part is popular enough and isn’t some incredibly complex part, your search will usually turn up some hits. The easiest method is to simply Google the phrase “ spice model”. This can usually be done in one of two ways. It might seem obvious, but the first thing you need to do is find a suitable Spice model. Conclusion and tl dr (too long didn’t read).
Adding the Spice Model to your LTspice Library.Finding and Downloading the Spice Model.
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While it is very easy once you know how to do it, there are a couple pitfalls that can cause serious headaches if you are unaware. This tutorial is going to cover adding custom Spice models into your LTspice simulations and library.
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