  We obtain a new phantom black plane solution in 4D of the Einstein-Maxwell
theory coupled with a cosmological constant. We analyse their basic properties,
as well as its causal structure, and obtain the extensive and intensive
thermodynamic variables, as well as the specific heat and the first law.
Through the specific heat and the so-called geometric methods, we analyse in
detail their thermodynamic properties, the extreme and phase transition limits,
as well as the local and global stabilities of the system. The normal case is
shown with an extreme limit and the phantom one with a phase transition only
for null mass, which is physically inaccessible. The systems present local and
global stabilities for certain values of the entropy density with respect to
the electric charge, for the canonical and grand canonical ensembles.
