S2Spice - S-Parameter to LTspice Converter

📂 Input File

📄

Click or drag & drop your Touchstone file

Supported: .s1p, .s2p, .s3p, .s4p, ... .s99p, .ts

⚙ Settings

Reference Impedance Z0 (Ω)

Output Format

Generate LTspice Symbol (.ASY)

Generate LTspice Library (.LIB)

Show debug info

🔌 4-Port Simulation Package

Generate a complete LTspice 4-port simulation with mixed-mode S-parameter extraction (Sdd, Sdc, Scd, Scc). The converted component will be pre-integrated as Circuit 2.

Generate 4-Port Simulation ZIP

📁 Export Method

Choose how files are saved. "Export to Folder" writes directly to a local folder (no security warnings!).

Download Export to Folder

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Ready. Load a Touchstone file to begin.

LIB (Subcircuit)

ASY (Symbol)

4-Port Sim

Log

No output yet. Load a Touchstone file and click "Convert".

No symbol output yet.

Enable "Generate 4-Port Simulation ZIP" and convert a .s4p file to see the simulation package contents.

Ready.