I’m trying to import an .s2p file (from a Murata capacitor) into QSPICE. I used s2spice.exe from TransmitterDan’s GitHub repo [GitHub - transmitterdan/s2spice], which made for LTspice and generated a .lib file that can be loaded — however, it doesn’t seem to simulate correctly. Has anyone had success with this workflow?
Here’s a snippet of the generated .lib file
GRM32ER60E337ME05_DC0V_25degC_series.txt (80.8 KB)
The syntax used in LTspice is not available in Qspice! Unfortunately. Ask the Qspice Author to add this feature.
@bordodynov already gave you the direction. I just curious why .s2p instead of SPICE model of GRM32ER60E337ME05 from Murata [SPICE Netlist (mod type)] for this part?
Here is the simulation result of SPICE model. To get this plot, in waveform viewer, change y-axis from dB to log.
GRM32ER60E337ME05.qsch (2.4 KB)
Hi Kelvin, thank you for the clarification and the example simulation.
The reason I started with the .s2p file is because our actual need is to extract the PDN impedance from a real PCB layout, and later run frequency-domain simulations using that impedance profile in QSPICE.
So in our case, the .s2p is not just for a Murata capacitor—it stands for the extracted S-parameters of the full power delivery path on the board.
Still, your example is very helpful for verifying component behavior in isolation. Thanks again!
Hi bordodynov,
Thanks for pointing that out — totally agree, it would be great if QSPICE could support LTspice-style .lib or even native .snp import.Really hope the devs consider it soon. 
