QSPICE-library

Text files for QSPICE libraries.

QSPICE supports existing LTSPICE models as long as they include .model statements. There are two primary methods for using these models:

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Method 1: Using Text Files with Listed Models

This method involves creating a text file that contains multiple .model statements. You can then select the desired model within the QSPICE schematic editor.

See Standard.bjt for an example on what the text file looks like.

Use the text files from this repository to follow the tutorial images below:

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Method 2 (better method): Importing Models and Creating Symbols

This method involves importing a .model statement directly into the QSPICE schematic and generating a symbol for it. These symbols (.qsym files) can be selected from the Symbol Browser in QSPICE.

Use the .qsym files from this repository to follow the tutorial images below:

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Notes on Symbol Selection

There are two symbol usage styles in QSPICE:

• .model embedded method:

  • One device per symbol
  • Drag symbol into schematic and use directly

• Selection guide method:

  • Multiple devices per symbol
  • Right-click on symbol to choose model from selection guide
  • Only supported for certain standard QSPICE devices

In the selection guide method, the symbol file (.qsym) does not contain the .model directly. Instead, it references a library file that includes multiple .model definitions.

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Additional Resources

• SPICE Model Links
• QSPICE Forum Discussion
• Standard.bjt Reference

You can also find additional models across various GitHub repositories.