  We carried out particle-in-cell numerical modelling of various multicomponent
current sheets of the family of analytically found Vlasov--Maxwell equilibria
that allow for an arbitrary particle energy distribution. Depending on the
parameters, the development of small-scale Weibel-type instability inside the
sheet is either possible or excluded. Both cases were studied and compared for
two variants of the particle energy distribution -- Maxwellian and Kappa. We
discuss the applicability of the developed model of current sheets and the
results on their small-scale instability to describe physical phenomena in the
vicinity of the magnetopauses of planets and late-type stars.
