  We present here dust models for the Small Magellanic Cloud bar calculated for
the first time with the regularization approach. A simple mixture of the
core-mantle and/or composite grains (mostly made from silicates and organic
refractory) together with silicon nanoparticles is consistent with the
following: 1) the observed extinction toward AzV 398 (a typical SMC bar
sightline), 2) the elemental abundances, and 3) the strength of the
interstellar radiation field. We predict the expected albedo and asymmetry
parameter of the models, which can be tested in future observations. The
proposed dust models can also be tested by looking for the expected extended
red emission.
