Both - if you have a model defined then calculated value is - value * capacitance multiplier if following model statement C is capacitance multiplier .model Cbreak CAP C=1 So if you take a capacitor from breakout library and modify it schematic value to be 1u and leave .model statement as is - it would simulate 1uF capacitance. if I edit the model and change C (capacitance multiplier) in model statement to 1n then I would result into net capacitance value of 1u*1n You can refer PSpice reference guide - Capacitor for more details around capacitor model parameters.Image may be NSFW.
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