  After the short survey of the Klein Paradox in 3-dimensional relativistic
equations, we present a detailed consideration of Dirac modified equation,
which follows by one particle infinite overweighting in Salpeter Equation. It
is shown, that the separation of angular variables and reduction to radial
equation is possible by using standard methods in momentum space. The kernel of
the obtained radial equation differs from that of spinless Salpeter equation in
bounded regular factor. That is why the equation has solutions of confined type
for infinitely increasing potential.
