Signal element Cadmium Mercury Telluride (CMT) LWIR and MWIR photodiodes have been investigated. High speed up to 1 GHz heterodyne mode detectors are included. Topology and technology features of 32x32, 128x128, 384x288, 4x16, 4x48, 2x96, 4x128, 2x256 LWIR and MWIR Focal Plane Arrays (FPA) produced on the base of CMT crystal and epitaxial layers are discussed.Temporary and temperature photodiodes stability and future FPA development are analyzed.