Once you have the .mod or .sub file, you can add it to your simulation using one of three methods:
Method A: Direct Schematic Inclusion (Recommended for Portability)
Place a standard 3-terminal NPN or similar component and rename it "TL431" to match the subcircuit name. Method B: Use the .include Directive tl431 ltspice download
Open your model file in a text editor and copy the text starting with .SUBCKT TL431 ... until .ENDS .
In LTspice, press on your keyboard to open the SPICE Directive box. Paste the text directly onto your schematic. Once you have the
: Provides a robust model that includes internal clamping and reference parameters.
: A community-driven site that offers pre-made TL431.sub and TL431.asy files for easy integration. 2. How to Import the Model into LTspice In LTspice, press on your keyboard to open
To use the in LTspice, you must download a third-party SPICE model, as it is not included in the standard LTspice installation. Most designers download the official PSpice model from semiconductor manufacturers like Texas Instruments or Nexperia . 1. Download the TL431 SPICE Model