Thermoplastic polycarbonate compositions

A thermoplastic composition comprising:

• 30 to 85 weight percent of a polycarbonate;
• 1 to 15 weight percent of an impact modifier;
• 2 to 25 weight percent of a polycarbonate-polysiloxane copolymer;
• 2 to 20 weight percent of a poly(arylene ether)-polysiloxane copolymer;
• 2 to 20 weight percent of an organophosphate, wherein weight percent is based on total weight of the composition,
• wherein the composition has a notched Izod impact strength of greater than or equal to 4 kilojoules per square meter (kJ/m2) as determined according to ISO 180/A, a melt viscosity rate of less than or equal to 130 Pascal seconds (Pa s) as determined according to ISO11443 at 1500 s−1 and 280° C., and a UL 94 rating of V1 or better at 0.6 millimeter thickness.

A thermoplastic composition comprising:

• 30 to 85 weight percent of a bis-phenol A polycarbonate;
• 1 to 15 weight percent of a bulk polymerized acrylonitrile-butadiene-styrene copolymer;
• 2 to 25 weight percent of a polycarbonate-polysiloxane copolymer;
• 2 to 20 weight percent of a poly(arylene ether)-polysiloxane copolymer having a siloxane content of 25 to 35 weight percent based on the total weight of the copolymer;
• 2 to 20 weight percent of an organophosphate, wherein weight percent is based on total weight of the composition,
• wherein the composition has a notched Izod impact strength of greater than or equal to 4 kilojoules per square meter (kJ/m2) as determined according to ISO 180/A, a melt viscosity rate of less than or equal to 130 Pascal seconds (Pa s) as determined according to ISO11443 at 1500 s−1 and 280° C., and a UL94 rating of V1 or better at 0.6 millimeter thickness