  We study the effects of noncommutativity of spacetime with mixed spatial and
spin degrees of freedom in a relativistic context. Using the Dirac equation in
(3+1) dimensions and in a symmetric gauge, we calculate the invariant amplitude
for a small magnetic field flux. The parameter {\theta} that characterizes the
noncommutativity here is not constant, and the model preserves Lorentz
symmetry. A comparison is made with scattering in the context of canonical
noncommutativity.
