  The fermion electromagnetic mass has been evaluated in 3-dimensional
electrodynamics in the first nonvanishing order of N^-1 approximation (N is the
number of the fermions in the model). It is established, that, if one proceeds
from the self energy integral in QED3, in the approximation under consideration
for the mentioned above mass one can obtain the quantum result for the fermion
electromagnetic mass as well the classical one. The electromagnetic mass of the
particle has the quantum origin, if its Compton wavelength satisfies the
condition lambda_c >> alfa (alfa is the scale parameters of the model which are
the "elementary length" r_0 and 8/alfa, alfa_0^2*N, alfa_0^2 is the dimensional
coupling constant in QED3); the particle electromagnetic mass has the classical
origin, if lambda_c<<alfa. The obtained results are discussed.
