A flame-retardant, optically clear thermoplastic molding composition is disclosed. The composition contains aromatic polycarbonate resin, a bromine-substituted carbonate oligomer, a phosphorous containing compound and an inorganic salt of perfluoroalkane sulfonic acid in amounts effective to impart to the composition flame resistance that in accordance with UL-94-5V standard is rated A at 3.00 mm and V-0 at 1.5 mm.