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After clicking OK place the text somewhere on your LTSpice circuit diagram.

include followed by the full path to the model file. The last line tells us the name of this model's sub-circuit is LM741/NSĬlick the ".op" button on the toolbar, then add. The top of LM741.MOD looks like this: * connections: non-inverting input Open the model file in a text editor and look for the line starting with.

Save it wherever you want, but you will need to know the full path to this file later. I found LM741.MOD available on the TI's LM741 product page. Model files can often be downloaded by vendor sites, but LTSpice only comes pre-loaded with models of common LT components. This is surprisingly un-intuitive, but is a good thing to know how to do. This page shows how to use the LM741 op-amp model file in LTSpice.