In this brief, we report a detailed study of the switch-off transients
of the drain current in floating-body partially depleted (PD) SOI MOS
FET's, When operated in the kink region and at frequency in the MHz ra
nge, floating body effects improve the current capability of these dev
ices. However we point out a serious drawback, that has been previousl
y overlooked: the same effects lead to orders of magnitude increase of
the off-state Leakage current calling for a trade-off between speed a
nd power dissipation.