@User,the

nfet_20v0_zvt

has also a 'suspicious'

mf=1

parameter. I think this is a typo, but not sure... The mos instance line does not use

mf

nor

nf

....

.subckt  sky130_fd_pr__nfet_20v0_zvt d g s b  w=60u l=2u m=1 t=30
+ ad=0 as=0 pd=0 ps=0 nrd=2 nrs=2 mf=1 sa=0 sb=0