SiC Vertical MOSFET channel length modulation

Hello , Thank you readind me
I wonder how to represent the reduction in channel length(pinch off seen in lateral MOSFET) for vertical mosfets due to the increase in drain voltage because the drain is at the back, away from the creation of the channel position.

Welcome to PF.

Your diagrams only seem to show lateral MOSFETs. Can you show a typical vertical MOSFET geometry and say where it is used? I have not used them yet.

Thanks
I am presenting a vertical MOSFET, where the drain is situated in a different plane compared to the source and gate. In this configuration, the current flows vertically from the source to the drain.
This design contrasts with the lateral MOSFET, which you can learn more about by referring to examples available HERE https://www.mks.com/n/mosfet-physics.
Vertical MOSFETs are predominantly used in SiC power MOSFETs, as their vertical structure enables the component to exhibit strong voltage withstand capability.