Author Topic: LTspice FET parameters  (Read 2259 times)

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Offline FaringdonTopic starter

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LTspice FET parameters
« on: October 10, 2023, 01:08:09 pm »
Does the LTspice simulate the way a FET junction capacitances change with voltage?
Or do they just give one  capacitance.
Eg, what is Coss for Si4848DY FET in LTspice?
eg the Si4848DY is as shown in LTspice

Si4848DY datasheet:
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Online SiliconWizard

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Re: LTspice FET parameters
« Reply #1 on: October 11, 2023, 01:14:41 am »
LTSpice appears to use BSIM4 models (which would be pretty much the norm with any modern Spice-based simulator), described here:

Yes, the parasitic capacitances are simulated based on the operating point.
You'll actually find your answer (at least as much as it can be answered) here:
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